Join Date: Feb 2012
Location: The land of Enchantment
Where the heels should be can become an obsession. :) My horses have really hard feet. The only part of their sole I can muster getting "out" is at the seat of corn and I only remove on occasion to let me know "how much" heel I can take off. Their frogs are a pretty good indicator of "how low" you can go, also. Unless, of course, for some reason the frog is so thick that it gives you a "false" idea.
But, as princess fluffy pointed out, you have to consider the balance of the "whole enchilada". You could, theoretically, get the heels to where they "belong", but have neglected to consider the toes. Not good. Often it takes working toward "optimum" for the whole hoof over many trims.
There is just as much horse sense as ever, but the horses have most of it.