i agree with everyone here. i would suggest lunging him more then 3 times a week though, that'd be cutting him even on weight. how fat is this horse. do you have any pictures. ? unless he's close to foundering.. his weight shouldn't be such a huge problem. i have a super fat pony who jumps his height and no matter how in shape he is, he stays completely fat.. i wouldn't overreact so much over his weight unless it's a health factor. he can use 10 minutes of lunging a day. 5 minutes of trotting in each direction.. but keep in mind excersizing will lose his fat, but he's gunna gain muscle too..
Count My Strides - Shane, Bought 2-18-06, Mustang.
"I whispered to my horse, "i'm afraid of falling" and he whispered back, "i have wings".