"I've taken along a tube of epoxy putty for years"
bonds well to royalex as well if you buy the variety designed for plastic - supposedly works enven under water/wet though I'd dry the hull first. Never have had to use it for a repair, but I do carry it, along with duct tape and some wire etc.
duct tape, or any tape, will stick better if you dry the hull and clean with an alchohol wipe from your first aid kit.
I've just been going thru my repair kit I take on wilderness trips - going to add a couple small tubes of aquaseal (for repair to floatation bags), and redoing the thermarest repair kit to add some extra self-stick patches (had to repair two pads recently, though not from canoe trips). some people carry a few extra bolts for seat hangers, but I just normally check them before a trip and don't bother (partly what the wire is for)
EZ Launch® Kayak & Canoe
Heel and Pegpads™
PFD's (Life Jackets)
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