I determined this week that I was just plain thinking too much while skiing. My buoy counts were still fine, but I was so busy thinking and adjusting that it didn't feel right. Yesterday I threw away thinking while skiing and just went out to "ski like me". Total change. Suddenly everything is easy, fun and familiar again, I'm more consistent, and the buoy count is about to rise again.
I have a theory about this. Things happen on the water pretty quickly. Trying to think gets in the way of your body doing what it knows how to do.
Secondly, however, it is possible that all that "thinking-skiing" was a prerequisite to how I am skiing now. In either case, I have now decided that I will only think while on BOS. Once I sign off, I quit thinking, and start skiing.