Sorry Neal, hit the wrong button

Anyway
Part tow;

Sag Starting position; there should be about three inches sag when you
look up the forestay with the sail on ( this is kind of a seat of the
pants setting) It is to create a bend in the sail. Light air--more bend;
Hvy air -- less bend. Up wind no bend. This is a back stay adjustment

Sheet position; The sheet car, to start, should have the sheet
bisecting the angle of the tack corner equally. This will let you
control the twist and shape of the sail.
Light air more car forward to get a baggy sail; move it back to get a
flatter sail for hvy air and ease sheet tension to get more twist ( to
relieve pressure aloft)
This may have been the the only adjustment you had correct. he top
windward tell tail should just be dancing

Halyard Tension should be used to shape sail, especially the upper half
and position the depth location of the Chord

That is enough said. Now the sling and arrows of the racing group can
let fly.
It takes and old man with little sense to even try to sell sail trim to
anyone, let alone a group

Looking at the main sail, I have to agree with Nutsy, you do need help
and it has damn little to do with boom bend, You need to get that Lump
out of the Tack area. Get more tension on your outhaul for sure. Get a
picture of the whole sail from your dingy and then we'll see what we can
do.

Ole Thom