Well I finished painting my screen.
It's a 108" diagonal, using blackout cloth. It should have been 106" but I gave myself a longer frame for the heck of it. Maybe I'll zoom a little more for 2.35 DVD's.
Anyway, yes... stretching the b/o cloth is a pain. But I did a good job of it. Wrapped it around my 3x4's. I then painted with .5 coats of killz primer (ran out, darnit) and three coats of ME.
First thing I noticed is that it soaks up the paint more than a hard surface will, so plan on buying 2 quarts of ME, or just be very careful and do only two coats maybe?
Anyway, because I did a good job of stretching, I did not have any trouble painting with a roller. And I did not use anything to brace the cloth with. Just rolled, the fabric stretched back a little, but no problems.
btw... i think i will recommend the killz primer. two coats, one quart should work.
"The boom is dead, long live the bass"