This is a video of me repairing a Souris River Quetico 17 that is owned by all of us while residing in the US Forest Service. This canoe had a million miles on it and showed signs of working ridiculously hard during the Pagami Forest Fire of 2011. It was oil-canning and had some major, over-flexed stress marks/cracks that while they were still not leaking, would eventually need attention. On this canoe, I ended up levering the bottom out to close to it’s original shape and then applying reinforcements to the chines (where the side meets the bottom). The damage to this canoe would indicate to me that it was dragged over a fair number of beaver dams or other obstacles. Very reparable and I will be releasing more vids of this repair/restore in the future.
Remember the principle is always the same with applying patches. Clean, sand, wipe the dust, apply resin, stick on patch, apply more resin, smooth out the bubbles, check and re-check.