Electric Boat Project -need input and ideas

So here is the deal my girlfriend has a camp on a private lake and only electric motors are allowed. There are a few pontoon boats out there that have 3 or so electric trolling motors on them to putt around the lake. I want to pack a large electric motor (like an old gm ev motor or a similar car sized motor) into a small bowrider (16 or so foot) inboard/outboard and be able to pull a skier. My first thought was electric jetboat but jet props are banned on that lake. Basically i just want a cool boat that'll esentially piss people off because it's electric and a loophole in the bylaws. It won't last long before the bylaws get changed and it's made illegal but it'll be fun for however long it lasts.

Projects are nothing new to me, i like to work outside the box and i'm the kind of guy that if you tell me it can't be done i'll just prove you wrong. In college i was involved in a project for 3 years where we build a turbo diesel snowmobile. More recently i rebuild a wrecked honda s2000 last winter as my project.

So who has any thoughts on how i could accomplish this?

Ideas and thoughts are all welcomed!

 

Good luck.