Cripes Simple,

I just sent a reply to Nutsy explaining that the bend on a shelf main
sets only on tack and clew. The shelve doesn't effect the sail trim. I
thought you knew this!!

I advised Nutsy to enlarge his brain to match his big mouth. Maybe you
better think about it.

If the downward pressure on the shelf would flatten the sail then it
wouldn't be a shelf. It is of material to fill the void but not effect
the sail trim. That is why it got its' name. When the foot gets a belly
in it the light, stretchy material looks like a shelf.

You better go back and re-think your discussion with Loco. Maybe your
sails don't have a shelf?

Ole Thom