I am trying to preserve some new wood on my boat using fiberglass resin without using fiberglass cloth. My local boat supply shop says this should work. However, when I apply the resin it does not fully cure, it stays tacky even after a couple days of drying. I've tried adding extra hardener but it still stays sticky. The air temp. has been in the 80 degree F. Any suggestions, would painting with gel coat or another type of sealer work better?