Jake, Since my Dacron sails are four years old, I take it you don't think the vinyl would adhere well. Is that correct? If it won't, I'll keep trying to find out what kind of ink, or paint to use. I am also interested in hull graphics, and it sounds like you are the man to talk to about that! Are there any guidelines you can give me to come up with the graphics? Just the name of the boat, BLESSING. Perhaps two colors. Thanks, Brian