We have just started a new radio controlled model club and we use 2 models as our official club boats. The great thing is we have an in-expensive catamaran in our line up and the RC Dinghy (monohull). The Fast Cat catamaran model is $400 pre-built and $200 as a kit. The RC Dinghy is $255 with electronics as a kit and is real easy and quick to build (my sons put one together). We tried the Nirvana II but it was a typical China built piece of crap and the servo's in particular in the boats ended up having problems (again low end China garbage).

RC model sailing is a fun way to get kids and anyone for that matter into sailing,