I trail ride and pack into the back country of Colorado and Wyoming. You may want to consider Renegade Hoof Boots. They are made right here in the USA by a husband and wife team that endurance ride. Who cares what color the hoof is, if you need a boot, you need a boot. I have been using these boots for 8yrs now without any problems. They go thru thick “sucky” mud without coming off and have given the necessary protection/traction needed going through rock avalanche fields. I have never had a “rub”. I put them on all four feet or just which ever foot may need it. If your horse is used to boots, he doesn’t care that it is on one foot or all, that’s a human thing.