On the F17, I cleat the main upwind only to let my hand take a break from the grinding. On distance races, cleat for 5 minutes with 5 minutes of grinding following that sequence until the angles change. It's called pacing and the older I get the more "pacing" I do. Downwind, cleat the main and provide small inputs to either twist the main or tighten the leech. Of course when it's windy, it's never cleated except for downwind! Cleats are your friend!!(and your crew!)

Bob

"The election is over, the talking is done, Your party lost, my party won. So let us be friends, let arguments pass, I’ll hug my elephant, you kiss you’re a $$.”
Liberalism = A brain eating amoeba & a failed political ideology of the 20th century!