Wrap a chain around a sturdy tree or other sturdy anchor. It must be able to withstand hundreds or possibly thousands of pounds of pull.
Attach the lever hoist's hook to the wrapped chain.
Wrap the hook end of the lever hoist's chain around the rock a few times before securing the hook into the chain.
Pull the other end of the chain through the ratcheting lever hoist. Pull the chain taut.
Place several heavy blankets or furniture pads over the chain. This will minimize the snap-back if the chain breaks.
Set the ratcheting lever hoist to the "raise" or "up" position.
Rock the handle back and forth to ratchet the chain. With every pump the rock will be dragged an inch or two closer to the anchor. Because the mechanics of the ratcheting lever hoist do all of the work, only moderate effort is needed to move the handle.
Remove the chains when the rock reaches its destination.