You can use them like a heart-bar then un bolt to clean and doctor the bottom of the foot. You can also add or subtract to the frog support as needed with no trouble. I like to make my own but the Chapman Hospital Kit put out by Thror'Bred comes with all you will need. Shoe already tapped, bolts, alum pad, and frog supports are all in the kit, but still like the ones I make better. I have a client, whose horse founder due to hypothyroidism last year.
Horse needs daily meds.
No major problems after the first eight weekss of special shoes and meds. This takes pressure off the toe and allows the white line to drain most of the time,it won't stop all the abcesses but it sure will help. Be sure you keep the same size shoe with the rocker toe, and if you have to, use the hospital plate. If the horse keeps getting abcesses, try coating the bottom of the foot with SMZ paste. The way I make it is take 10 SMZ pills and crush them in to powder, add saline solution to the pills sparingly because it doesn't take much, you want it to look like iceing on a cake.