Well, thank you a lot for a lot of answers! I am a 90/85 kgs rider, and I own an airush protoy 135 kiteboard. I was thinking to buy a wipika Amp 2003 15.1 (20 mts developed area) for 2 hundreds dollars. Money does matters! I have one wipika amp 2003 11.9 (16 mts) and one rhino 2005 12 mts. Winds in ...