Wingman WA said..
If your sup foiling then I reckon you will find the mast a bit floppy, I tried one a while back and towed with the stealth 175 which was a great wing, tried sup foiling on the albatross 210 and the thing had a mind of its own, couldn't ride it :(
Currently SUP downwinding, dock starting and riding wakes using the 210 Albatross and '21 mast, and I'd say the setup is towards the stiffer end of the spectrum.
