I also thought about a wind-generator, but dropped that idea. Boat is in Med (Croatia)
I attached 2 rigid PV-panels (300W each) industy-standard (no expensive marine stuff), with salt-spray-test certificate, for 200€ each, and mounted it aft of bimini (behind the backstay) on a DIY construction, made of 30mm AISI316 tubes and an aluminium frame, all parts without bending or welding. All tubes, aluminium and tube-fittings were approx. 800€.
Will last wind-forces up to 60knots (Bora in Croatia is sometimes fierce!).
Delivers 200Ah+ per day (sometimes more) in combination with my victron mppt solar charger.