Did You hear about the boat modeller who wouldnot use P 38 just because it said CARbody filler. I use casting epoxy resin because it sticks like s8&% to an army blanket, and works its way into al the little crooks and nannys, and having done so, strengthens the hull enormouslymaking mine quite rigid. It’s a bit embarassing mind you if you pour epoxy resin into a hull that leaks, and it drips onto the carpet. A tip from an old scot, if I have a paint brush that has been ruined by solidified paint, I put the bristles on my anvil, and welly them with a two pound ball pein hammer. Then I carefully seperatethe bristles and hammer some more if there’s any paint left, until the brush is a useable paintbrush once more, then use it to spread resin around the inside of my hull, and any glass fibre project I have, very useful, it beats washing them out in acetone, but there’s another little tip, acetone will get unset resin out of the carpet, but it will leave some discolouration. CAUTION, acetone is highly inflammable, and not only removing all the natural oils from your skin, but could trigger off a nasty skin disorder not to mention your lungs if you breathe the vapour in too much….
p,s if myhull is 100% wood, I just pour PVA Adhesive into it, a good source for which is SCRewfix, that sets like concrete, and can add loads of friction to your prop shaft if any goes astray My final word is, IF ALL ELSE FAILS, READ THE BLOODY INSTRUCTIONS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!