Greetings from Hollywood, California. 😎 Many thanks to David Metcalf at Metcalf Moldings for his advice and for so graciously replacing parts I messed up. This craft has been swimming pool tested (after all we're in Hollywood) and it ran beautifully. Next stop is the local pond. I chose brass counter-rotating props. Those are lithium batteries tucked under the sides. I chose to recut the decks out of wood. Brits rave about plastic but I found it difficult to cut and forget about sanding down the edges. (I guess if you cut it properly you don't need to sand the edge.) Major mistake: watching a You Tube video that told me I should make brass joints using a Propane torch. it will make a good joint but it MELTS ALL THE OTHERS. There was a lot of learning here for me and thanks to David's fine kit I think I'm somewhat of a better model builder.