I have put this clip on to easily remove the uphaul when its windy. Yesterdays forecast was 20/30 knots so took it off before I went out. Wind dropped out for over an hour when I was out but luckily I was in waist deep water. Its a tricky call to use it or not depending on where you sail. Steve Allen reakons it effects the laminer flow over the luff sleeve. Effects it more in moderate wind than when its honking. Anyway I am not using it anymore for speed/GPS sailing. It must have worked by not having it yesterday

Cheers for the comments guys, except from trolls