I almost did an outboard actually because it would be easy. Ended up being deterred by the price, noise, and looks. Imagine a chris craft...
Oh yea, and CDK is right. If you use 72 volts and 100ah you won't go very fast at all, no matter how much current your controller puts out. But...
nsmoracr, Sorry if I'm a little late to the party, how is the project going? The reason I'm posting is that I'm basically doing the exact same...