All right, we got one glued down and curing! I need to figure out how I'm going to fix the other. The boot-heel is off the hoof-heel by 0.5cm. I'm going use more resin as filler. Not sure if I want to add filler behind the heel, or under the toe.

I've decided to glue the boot heel to hood heel, and then pour resin in around the toe to fill and add more adhesion! I'm going to also pour resin around the toe-box of the other hoofboot as well(this was always the plan, after gluing).