Originally Posted by jyasaki
Krazy Glue (or most other cyanoacrylate) cures to a brittle material. Not ideal, IMO.
You'd be better off using a urethane adhesive (Sikaflex, Aquaseal, 3M's4200/5200, etc.) That will stay (at least more) flexible when cured.
As with most tube repairs, surface prep to clean of oils and such.
Do not use Sikaflex on PVC tubes, since it conatins silicone, which will damage the tube material.
If you use the boat, you will get scuffs and scratches on the surface of the fabric - no big deal functionally purely an aesthetic thing. If you find that down the road, that the fabric is starting to get ragged, you then might wish to refurbish the tubes with Tuff Coat.
The much greater threat to your PVC tubes (than scuffs and scratches) is sunlight. Keep your boat out od the sun when not in use!