JB weld does not flex or contract/expand like your hull material does so expect it to fail.
For hull repairs I drill a relief hole at each end of the crack to keep it from spreading any further. Then using a hot tool, like what's in that that repar kit, to melt plastic and form it into shape. I always keep extra hull material from when I drill, cut, rig my kayaks just in case of situations like these.
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Urban Camo Trident 13
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