I put a very light aluminum "L" on each side of the top of my Glaser sail on the Marstrom. Camber was no problem, as their sail is flat at the very head anyhow. Yarns tied at the back of the head seemed to be better behaved than without the little 2" end plate.
The end plate on the boom was not effective, as it was usually too far away from the sail.
Woody Cope said it was OK with him unless I started beating him regularly. Not likely.