Whenever swinging on the hook, I've always relied upon a chain snubber to take the load off the
windlass and provide some resilence to an all-chain
rode. It's never failed on us, even during a gale.
The last one I put together cost a whopping $5.75 - using a new chain hook and an existing dock
line. If you're concerned about failure, then use two separate sets of
lines/hooks - on both port and starboard
cleats.