I've got a C&C 26.
Originally the boat had a bolt rope on the foot.
I bought a new set of sails 3 seasons ago with a loose footed main.
I much prefer the loose foot.
- seems to set better.
- easier to see the results when trimming, or maybe it's psychological.
- I don't get any foot flutter!
The foot shelf is supposed to help prevent boundary layer crossover under the boom, thus improving lift, but the increase in effectiveness of the new sails, makes this loss (if there truly is one at 6 knots) unnoticeable!
Just because you're paranoid ...doesn't mean they're not after you!