I am helping a friend with their Old Town canoe. 3 years ago the paint was cracked and coming off in areas and I sanded, primed and painted with Jamestown Distributors Total Boat Primer and Interlux Brightside Paint. The canvas was cracked and peeling same as in the attached current photos. Owner does not want to recanvas at this time so trying to get something that will last a while. I do woodworking/furniture as a hobby and not experienced in canoe paint. Have a couple of things going on. (1) there are 2 small places with torn canvas from a dock encounter (2) general "spider web" cracking in the paint (3) this year one larger area where the paint came off in sheets and looks like it did not adhere to the primer before? Do I glue the flap of canvas back down and prime/paint with the remainder of the canoe?Glue? What grit sandpaper do I use for final sanding for the primer and paint. I may have sanded it too slick before. Will sand the entire canoe and repaint- Go back with the same primer and paint or try something else? All the paint will not come off by sanding- can you use an epoxy primer? Any suggestions are appreciated. Thanks!!