The Seamaster is an altogether better flier than a trainer with floats. It is aerobatic & it gets off the water easily. The current Seamaster ARF weighs 7lb with a good .46 on it & it flies well configured that way. I have seen a 10lb Seamaster with a TT .46 Pro that flew acceptably well, but was somewhat sluggish for aerobatics. I suggest that you weigh your Seamaster. If it weighs more tan 7 lb, then try to lighten it (cut holes in the ply skin & re-cover it) &/or put more motor on it. The plane is worth keeping.