i would have your vet look at it, because they will know how to treat it if there is an infection. infections can be serious if they get too bad, and you don't need your horse to get any more damage. the farrier should keep an eye on it too.
my rubber tall boots are really crappy and its almost impossible to keep my heels down without cutting off my circulation because the rubber creases and digs into my ankle and it just doesn't work. i've had them for nearly a year and i just can't take it anymore. i would like to try paddock...