This hosrse suffered from a full blown lateral heel. I removed the loose horn carefully. I put an egg-bar aluminum shoe with a plastic heart-bar full pad loaded with Epona dental impression material to shift the weight to the frog and medial area of the hoof. I filled the hole with cotton soaked with Well-Horse Resin to avoid future infection and/or complications.
Check : www.Well-Horse.com
I strongly recommended this product for multiple uses.