Thanks Raked...I have an almot full can of 3M spray adhesive for auto trim I bought when I put a new top on the MG. Perfect use.Try 3M spray adhesive 77.
light hit to the batten and the sail, wait 30 sec's and stick together.
very strong weather resistant bond. Also pretty cheap at ~$9 a can...
you can do a lot of gluing w one can.