I moved my horse to a different barn for training, and so a new farrier did his hooves yesterday. His feet were overgrown as they got left too long in the barn switch, and I thought this farrier did a wonderful job!! However, what I am not sure about is that he said my horses feet were soft and that I should put Coppertox on them to "harden them up". I googled and searched on here, and there seem to be very mixed reviews on this stuff. What does it mean if the sole is soft? Should I use this product or is there something better?