Wiring finished and all working. Just needs to be tidied up and fixed so it does not flap about.
Next step to waterproof the important bits.
Then a running test in the bath.
The boat weighs 13lb, it floats just about right.
Rather than put dead weight in as ballast, all the weight needed to float level is made up by the lead acid batterys.
That way I should get really good running time.