thanks for the reply
In The Aleutian kayak, Wolfgang Brinck mentions using latex roofing paint as a glue to stick a patch on. Doubtless you could use other things in the same fashion. Not sure how something like Marine 5200 would adhere to painted canvas but it sticks to nylon.
My aging canvas SOF has a couple of very small leaks that are in hard-to-get-to spots backed by wood. They are normal wear-and-tear abrasion or degradation of paint/canvas due to stretching. As much as I dislike the idea of plugging them with adhesive or other commercial stuff, I have no choice. I also realize that this is a temporary fix and I will have to re-skin the boat at some point. Can you recommend a product you have used for similar damage control? Thanks. Tom