That is your opinion. There are many thousands of horses that naturally have higher withers and backs. Like thoroughbreds for instance. If you look back about 4 or 5 generations there is a 100% thoroughbred mare bred to a half quarter thoroughbred. He has racing quarter horse bloodlines which make him leaner, taller 16h, and longer neck and higher withers. He had a 15lb saddle pad and saddle on plus myself at 117lbs which would make 132lbs which is about 13-14% of his body weight. Not being as sickly as you must think he could easily carry 20% of his body weight. Which at 1000lbs that is 200lbs. Giving he needs a little more weight I only walked him around a 1/4 trail. Thanks for being rude in giving your opinion though peppy barrel racing. Have a pleasant day in the cold. I'll take a nice ride for you in the 78 degree weather here in horse country ocala.