I'll chime in on the rules discussion.
I think the current hull length rules are the right approach for the electric classes. Whether it was intended or not, it's a brilliant way to keep electric classes from being a constant electrical arms race. It's also something that's very easy to tech (as opposed to battery capacity or motor winds).
If the boats are on the verge of being overpowered with a range of readily available power systems people don't have to constantly chase better motors, batteries and escs. As it stands, just about everyone has plenty of power for the size of the boat and races come down to setup, driving and luck....as it should be, IMO. For example, allow P boats to be any length and we're right back chasing the best batteries, motors and ESC's (more $$$$) which will be evolving monthly. That's when it's expensive in time and $$$$ to stay at pointy end of the pack, then participation falls off.