Great timing on this!
I just got a call the other day from a guy who was interested in what's out there to make a boat into an electric boat. He sounded interested in converting an outboard to electric.
I mentioned that I know that guys have done it using Eteks, which is what runs my motorcycle.
If anyone is interested, I did a short blog post on what's available out there to make your boat into an electric one.
Electric Boats Blog Entry
I'll be following this thread. Maybe
I will be building an Etek Outboard soon!