Often times they will send you the repair material like the welding rod or scrap from other kayaks. you can also check with your local kayak shop to see if they have scrap pieces from other kayaks. We need to know where the crack is, from inside the kayak or canoe. this can be tricky, so use a pin to poke through the hull so you can mark the hole using a marker pen. when you have marked the holes, you will then know where the ends of the crack are.. You can also overfill a touch and smooth down later. the repair will be pretty good for flat-water use, but will always be a weak spot to be wary of in significant white water and to a lesser extent surf..
Trob is right just weld it you can do it yourself or take it to a kayak shop and have it done. if you do it yourself you'll need some plactic from the yak or one like it, you can pick some up from most yak shops and you will need a soldering iron. i think if you go to malibu kayaks they have instructions on how to do it. i fix a few cracks and. It isn't very likely that you'll have a kayak with such a large hole, but whatever the size, here's how to fix it. add tip ask question comment download. ~ you can smooth down your repair with the tip of welder, similar to how the hot spoon is used in this instructable. don't use a sander.. Rotomold kayak repair. two of the most common types of “damage” to a rotomold are scratches in the hull or pressure indentations (“oil canning”)..