We have to know several things before we can help you.

- what is your budget?
- what speeds do you want to see (realistically)?
- what run times are you looking for? Remember that the faster you go the shorter the run time will be.
- what kind of water do you run on? Pond/lake size, choppy or flat?
- are you racing or fun running?

In my opinion, if you want to keep it cheap...er, then I suggest two 40mm motors. Leopard or SSS would be a good choice. The TP Power are very nice but expensive. The catamarans don’t have much drag so that helps depending on weight which will obviously increase as you add parts. Lower kv motors on more power would be best. The problem is that lower KV motors would require higher amp ESCs with larger batteries and that makes the price jump substantially. If you can get away with 2-4082 or 4092 motors 1600 to 1800kv that can run on 2-180a Seaking ESCs you could use 4-3s or 2-6s lipos to run it. It should be very fast with that setup and should be less than $400 plus batteries, mounts, servo etc.