My take on it, dont drive them into the RC boat, leave them a way out. If they have passed the point of no return, give them room (call "No room" first, well ahead) and protest them. Prudent RCs dont use the boat but a mark to define the line, so the bargers have a way to espace if they need it. This is just a game, so even if somebody plays the game poorly or even stupidly, there is no need to cause injuries on sailors or equipment.