I don't ride him limpy. The boots would just be for when he is rideable ( but instead of shoes ) during the winter etc. THe farrier says he does not look like he foundered. He guessed Navicular. The vet says not navicular ( and the previous owner was told that he had been x ray'd before she got him, and the xrays showed nothing... no navicular) and HE guessed founder. ( and I have nothing to check as far as his history... he was given to me, and the previous owner had no contact info for the woman she got him from... and calling vets and asking about horses named Sam... lol.. vet says there are a million!) So, have cut wayyy back on grain ( just add a handful with his glucosamine..) He gets good hay, there is very little grass in the pasture ( although when it is nice out I do occasionally let him out to eat for a little while...) He flares a lot. Limping comes and goes. No rhyme or reason ( not after a ride, or anything that I can identify...) I am thinking of getting a chiro out to look at him when I can schedule that. I am wondering if he is not arthritic. He has very short strides. I am willing to do what ever I can to make my boy happy- what are you thinking as far as diet??