I use Selleys AQUA Knead IT polymer putty its made for repairing chips in fiberglass boats sets rock hard, sand file shape sets white , i used it to fix and re shape the pointed end on miss geico pontoons
its water proof 2 part epoxy that mixes like play dough for shaping . sold in AU
its water proof 2 part epoxy that mixes like play dough for shaping . sold in AU
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