Riveted the wing tip attachment hinge halves to the LH wing tip. For the bottom one I applied epoxy structural adhesive to the fiberglass surface, then clecoed the hinge half in place and riveted it. This made a bit of a mess and the adhesive squeeze out came close to getting inside the hinge tabs so I won't use that method for the rest of the hinge halves.
For the top hinge half I mixed up some epoxy/flox and dabbed it on the fiberglass surface at the location of the "flox rivet" holes. I then clecoed the hinge half in place, installed the rivets and then dabbed some more epoxy/flox in the flox rivet holes to form the "shop head". This method worked better and I think I'll use it for both of the hinge halves on the LH tip.