Snatch blocks are designed to attach to the cable without having to remove the load or take apart the pulley. Just open up the side plate by rotating it, then attach the block to the cable.
To straighten out a pull or to route the winch rope around an object:

How to redirect an angle pull using a snatch block
(Used with permission from JonFund and 4WheelDrive)
To double the line for more winch power or to spool out more cable when the anchor point is too close to the vehicle:

Self Recovery with a Double Line Pull
(Used with permission from JonFund and 4WheelDrive)

Recovering another vehicle with a double line pull
(Used with permission from JonFund and 4WheelDrive)
Remember that a double line pull places double the stress on your mounting points, cable, and winch tools. Make sure all tools, including the snatch block, are rated to double the winch capacity if you plan on pulling the maximum load.
Winch snatch blocks are designed to operate safely under heavy loads. They are made to handle different strengths. Higher rated snatch blocks are made from stronger, thicker materials.
What size snatch block do I need?
If you plan to pull up to twice the capacity of your winch with a double line pull, make sure the snatch block is rated up to double the maximum load your winch can handle. If you only use the snatch block to straighten a pull, you can get by with a lower rating.
Generally an 8000 pound snatch block is strong enough for a double line pull with any ATV or UTV winch. For Jeep and truck winches, double the capacity of the winch to find the recovery snatch block rating (16K, 20K, and larger).
How big are they?
Like most other winching tools, snatch blocks are small enough to easily be tucked away in a corner of your vehicle (for recovery snatch blocks) or in the tool kit for your quad (for ATV/UTV snatch blocks).
Why do I need a snatch block?
A snatch block is useful for a variety of reasons, including the following:
When rigging up a double line pull, keep in mind that it will also reduce the line speed by half and double the amount of stress placed on the mounting points.
If you wheel out in the backcountry, you know how important it is to be prepared in case things go wrong. And when it comes to offroad recovery, there are certain items you just don’t want to leave at home!
We’ve put together a basic list of offroad recovery and winching tools to help you prepare for any recovery situation you might face. Some of these items are essential to the winching process, and others are just a matter of convenience. Feel free to add your own items to the list.
Going off road this weekend? Don’t leave home without these two handy winch tools: a snatch block and a clevis shackle.
Snatch blocks (or pulley blocks) are an offroader’s friend. Here’s why:A D shackle (or clevis shackle) is another winch tool you don’t want to leave behind. Here’s why:
The stakes must be deep enough and the ground dense enough to sustain the force of the pull or the winch will yank the anchor right out and all your work will be for nothing. This can also create a potentially dangerous situation if the buried anchor pulls free and rockets toward you or your vehicle.
After driving in the stakes, connect them with a chain or tree strap, and attach the winch hook to the strap as close to the ground as possible. If you have trouble pulling the stakes back out, try winching them out by pulling at the same angle as the anchor.
As you can see, digging a dead man takes time and hard work and is not going to be your first option, but when it comes down to walking back for help or making your own winch anchor, now you have the option of getting out on your own without the embarrassment of calling in the rescue squad.
For more tips, see Part 1 of How to Dig a Deadman Ground Anchor.
Maybe you’ve been there before. You’ve been riding hard for the last couple hours, conquering boulders, mud, and tight spots until suddenly you find yourself good and stuck, and no amount of pushing, pulling, or cursing will make your vehicle budge. You’ve got a winch. The problem is there’s not a rock, tree, or stump in sight and no buddy around to pull you out. How are you going to find an anchor point to winch out? Roll up your sleeves and get ready to move some dirt. It’s time to dig a dead man.
Digging your own anchor is a last resort, but when you find yourself in a desperate situation, miles from civilization, it may be your only option. Here’s how you can make your own ground anchor if the situation calls for it.
If you’re adequately prepared for times like this, most likely you have a shovel stashed in your ATV or truck. Pull it out and start digging. The depth of the hole will depend somewhat on the size and weight of your vehicle and just how good you’re stuck. The deeper the hole, the sturdier your anchor will be. At minimum, it should be deep enough to fully cover an object the size of your spare tire and rim.
Dig the hole directly in line with the stuck vehicle, if possible, and far enough away from your quad or truck to spool out a decent length of winch cable for a maximum power pull. Spool out the cable ahead of time to measure the distance if you’re unsure where to start digging. Taking the time to plan out where your dead man needs to be is better than making the hole too close or too far away from your vehicle and then having to dig a new one.
A broad, weighty object makes the sturdiest dead man winch anchor, such as a log, large rock, or spare tire. If you carry a spare, you have a heavy, solid object on hand without scrounging around for a log or other large object. The size of the tire corresponds to the size of your vehicle and, if buried deep enough, should hold fast as you winch out.
Attach a chain or tree strap to the anchor and bury the log or tire deep in the hole, angled away from your vehicle for greater resistance during the pull. Fill in the open areas with dirt and pack it down solid. Hook up your winch to the chain or strap and you’re ready to start the recovery. After you winch out your vehicle, make sure to retrieve your makeshift anchor and fill in the hole. Leave as little trace of your digging as possible.
For alternative methods of burying a ground anchor, see Part 2 of How to Dig a Deadman Ground Anchor.
When you’re out exploring or working in the great outdoors, there’s no telling what kind of tricky situations you may find yourself in. That’s why it’s best to be prepared for whatever life throws your way. A winch can get you out when you find yourself stuck, but some situations may take a little more ingenuity and finesse. Here’s where your winching tools come to the rescue. The three most basic winching tools you should always keep at hand are a snatch block, tree strap, and D-shackle.
1. Snatch Block
Whether you need to straighten out the cable on a side pull or you need some extra “oomph” for a really good stuck, a snatch block gives you the power and flexibility you need. As an added bonus for heavy pulling, they also reduce amp draw and heat buildup.
In order to truly double the capacity of your winch, the snatch block capacity should be double the maximum capacity of your winch. For most ATV or UTV winches, which generally run up to 4000 lbs, an 8K pulley block is more than sufficient. For recovery winches, double your winch capacity to find the capacity you need for the snatch block. Make sure the snatch block can handle the diameter of your cable.
2. Tree Strap
If you’re hooking up to a natural anchor point such as a tree or rock, a tree saver strap will come in handy. Tree straps soften the impact on the environment, unlike choker chains, which can damage or kill trees.
Your cable itself should never wrap around an anchor point and hook back onto itself. This can severely damage your cable. A tree strap saves your cable from rubbing against abrasive surfaces and gives you a secure hold on your anchor point.
3. D-Shackle
A clevis D-shackle (D-ring, anchor shackle, etc.) works as a link between the tree strap (or other anchor point, such as a tow hook) and your cable hook. Check the working load of your D-shackle to make sure it can handle what you put it up against.
With these basic winching tools and a little know-how, you can winch your way out of tricky spots with little effort.