I have a 1/5 Sig (as an L-4) and also a 80" H-9 on floats, and love them both. They can be tricky in the wind, but it teaches you how to fly with control in the wind after a while. Flat turns using opposite rudder and aileron, crabbing in or sideslipping on approach, stuff like that. Definitely not a basic trainer, but a great advanced one