There is no reason for saying "May result in DSQ", it's now clear it's an empty threat and serves absolutely no purpose. If the RC wants the option to change the weight of a rule violation I don't see an issue with that. They just need to make sure the penalty is made clear before the teams push off the beach and stick to it.

As for the ground crew running the boats through the surf the last 100 yards. If the rules allow it then so be it, and chock it up as a lesson learned. I don't see this any differently than Rick White's Steeplechase rule regarding the use of paddles where you can paddle the whole freaking way if you want to.