I'm also considering
Golden Motor EZ-X05. Interesting design, uses magnetic coupling between motor and prop for no moving seal.
48 volts is also easier to deal with than 36 and the motor has a 3 state current limiter to help with the battery life. Four 12V, 100 AH LIFepo4's should work well in series and be easy to charge up on the davit.
But now up to 4 boat bucks...
Ah, boats -