This is me on the 6-3 Sky Sup and new 1750 HA Fanatic foil , great combo. I actually learnt on the 6-7 which I still really like . Have done some epic down winders on it. The 1750 can handle some serious speed without blowing out & also very good light wind (I'm 87kg) . I also have the 1550 which I use for the really windy days. All paired up with the DT 5m Echo it covers all aspects of my winging, flatwater , surfing waves & downwinding . Both the 6-3 & 6-7 are still great surf foil Sups as well.