Congrats. on a great lure!
When I made epoxy coated wooden baits I used Etex. It is a decoupage epoxy, designed to move with the large wooden surfaces it is used to cover, like bar tops. It stays somewhat soft and flexible by design
D2T is glue epoxy, designed to be very rigid and hard. It is designed to act as a glue between two surfaces, not to coat them.
That makes it brittle over large surfaces, and prone to chipping off in big pieces on big lures.
If that were my lure, I'd touch up the damaged section with bondo, and then paint to match. I'd scuff up the D2T with fine sandpaper, wipe it down with denatured alcohol, and then I'd put two coats of Etex over the D2T. It won't be perfect, but it should hold up for a while.