Hello. I have also some rc boats. Boats are cool
My 32 inch catamaran powered by Medusa 36.80 1100kV on 8S li-po. It take in brust about 80A, it's 2400W for 2800g. (~6lbs) model

5.9 sec. for 130m. stand start
youtube.com/watch?v=GJY40BBeLNI
Also I have some mini eco's expert and standard, my own construction.
Regards Karol, Poland.