So how many folks in ASA train their crew not to look at the mainsail while
they're "trimming" it?

Look at the knot log....

--
katysails
s/v Chanteuse
Kirie Elite 32
http://katysails.tripod.com

"Women and cats will do as they please, and men and dogs should relax
and get used to the idea." - Robert A. Heinlein