So I know it is very very important to pick out feet with shoes. But almost all the horses at my barn don't have back shoes. Do you still need to pick those out? Because a lot of the horses are very anti-picking up their back feet, so usually I just get it a few inches off the ground, and reach under with the hoof brush and try to get as many swipes in there as possible before I lose my grip and they slam their hoof down. Do I need to do a better job on their back feet? I usually get most of it out doing it the way I do it now, but do I need to make positive I get it all?