[quote=Dogboy]Not the easiest to see what's going on from that picture, but I'm not seeing any glass fibers. Did you just smear epoxy into the crack? Also, if the bottom of the hull is foam core, then I would be concerned about water ingress into the core. That could mean replacing the core is also necessary. At the very least, you need to make sure the core is 100% dry before glassing. That could be the reason you have been having adhesion issues.
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