Jim_R wrote:
Lots of debate about the need for a safety chain here and on other boating boards. As I have come to understand it, the straps and tie downs hold the trailer to the greater mass boat, rather than vice versa. Imagine picking up a trailered boat by the boat and shaking it, the straps are enough to hold the trailer in place. Now imagine picking up the boat and trailer combination by the trailer, turning it upside down and shaking it - all bets are off, the straps simply are not designed to support the weight of the boat. In this second scenario, would a safety chain help? Not much, even if the chain were strong enough to hold the full weight of the boat, it would swing around unsecured. As I've heard it, the saftey chain is there to prevent the boat from sliding off of the trailer should the winch strap and tie downs be insufficient. Unfortunately, given the slack necessary to put the saftey chain on (and take it off), it really does next to nothing to secure the trailer firmly to the boat unless the slack is taken out by repositioning the boat on the trailer. Obviously towing your boat fast down an extremely bumpy road with only the saftey chain on, assuming the chain does not break, the boat will bounce and bang against the trailer at the very least. To my mind, the saftey chain only protects against the breaking of a winch strap, and judging by my last boat which at 28 years still had the original winch strap, I think this is a pretty rare occurance.
In this scenario...this is why I prefer the strap/bucket setup over a chain. If a strap is kept tight, it has less room for shock and less likely to break. A chain will have slack and therefore have to absorb quite a shock if things went south.