@PT Mike, totally agree about dawn skiing, could`nt think of a better way to start the day. (except for one thing, but that doesnt happen much anymore). It does take a bit longer to warm up compared to skiing in the evening. I was free skiing on a tidal river the other day with about a 2mph current. Had perfect pass set at 34mph, skiing with the flow my airguide speedo was showing 32mph and skiing against the flow it was showing 36mph. Trying to work out how this would effect times through a fixed course.