It’s all about completely wetting out the epoxy on the surface. I formulate adhesives, including epoxies, for a living and this is one of the main things that creates a poor coating surface. The epoxies made for clear coats have good surface tension and will not fish eye aka dimple on their own. If you’re seeing dents or bare spots it’s just because you didn’t spread the epoxy to that spot and allowed it to wet out the whole surface. On occasion it can be something on the surface, such as an oil, that is messing with surface tension and it’s easy enough to use alcohol to do a light wipe down prior to clear coating if you think you have debri on the lure surface.