Can't fault Lowflyby's methods. However, I'm unsure what he means by fiberglass CA hinges. I use Great Planes CA hinge material. I think all of them a pretty similar. Great Planes are plastic with a fiber material on them that I would guess allows CA to hold firmly.

All hinges can fail. I always seal the hinge gap on the ailerons with covering material ironed down into the hinge gap.