There was a good thread back in 2011 on this here's a link
http://www.catsailor.com/forums/ubbthreads.php?ubb=showflat&Number=233480&page=1
I'm very happy with how my graphics that were computer cut out of sticky back and stuck on a 6yo well used Dacron sail has lasted. The main thing with sticky back is to let the sun set it on the sail before you use the sail.