Originally Posted by FlyingDutchman
A good long frame with drop rails and such, or boxes for lateral support really help make the raft more rigid. A rigid boat is more likely to bounce or slide off, or just pin momentarily without getting an upstream tube sucked under and causing the boat to wrap around the rock. A rigid boat may also just flip and get pirouetted off the rock.... However only good driving is the best method to avoid a pin and wrap.
Also the drop rails allow you unload gear and boxes out of the boat without the tubes wrapped on the boxes. Keeps the boat shape if you need to unload weight to unpin it without going into taco mode.
Just like I tell the new guys:
There is a reason things are done the way they are done here, it's because it's the only way it should be done because we learned how it needed to be done