You should be looking where you are going, and giving sporadic glances up at your telltales. Whenever you look back, like at your mainsheet block system, you are not paying attention to your steering. I don't know why you would have to look at your blocks -- they are not going to tell you anything. Your sails tell you whether you need to ease or sheet, and your arm knows how to do the work. Sailing upwind or downwind, you rarely have to adjust the mainsheet anyway -- you set your sails and steer by them.

As far as why I don't like to cleat the mainsheet upwind, it's the way I was taught from the time I was a child. And I know Rick never used to cleat the mainsheet either in heavy air upwind. And, of course, you never cleat the main on a reach, because you have to play it constantly.

On my Wave, I have to really work at preventing it from cleating upwind, because it is hard to get the cleat set high enough. So I hold the sheet down with my foot so it won't accidentally get into the cleat.

I don't know, maybe I'm just a control freak.