iceboating.net Minnesota Ice Sailing Association

I'm new to the group I have at the moment a home made Ice surfer this is my first year 3rd time out yesterday. The ice was 6 to 7 in thick according to the ice fisherman. I'm still working out the kinks, think I have a blade sharpening problam as the back end tends to want to spin out as the speed gets up when side loaded with the wind. At the moment my blades are ground flat, I'm going to put a slight angle to the outside on them would that help?