Yep.... that is pretty good way to drop a boat, and its actually one of the cheaper ways that has been invented.
but for real colossal damage you can rent a crane and do a much better job of it....
when dropping boats off of trailers that way, you really do get the most bang for the buck from a fin keeled sailboat, cuz you're never really sure which way is going to fall.
this one sure didnt waste a moment for it to make up its mind and decide what it really wanted to do with its freedom. as soon as it realized there was no way it could pass itself off as a bilge keeler, it just gave up and layed down...
it is my opinion that if the boat would have been supported in the usual manner, it would not have rolled off the back of the trailer, because even when the trailer tongue came loose from the truck, the capeted bunks would have prevented it from sliding back.
once it settled back on the rollers, instead of carpeted supports, history quickly began to be written about a sailboat on its side on the launch ramp....
bow strap or no bow strap, there is a lot to be said AGAINST load carrying rollers, under any kind of load, on ANY KIND trailer.... boat trailers especially.
just because the inventor of such things said it was a good idea, it really wasnt.