My walker is 15 hands, and on a trail rides he is just ready to go and his walk usually outwalks the QH's I ride with...and he always gets this look on his face when he finally looks behind him and realizes he's leaving all his buddies:) LOL He does mellow out after the first 20 minutes or so, and tends to pace his walk with the others, or I just stick him behind my qh mare (usually have 4-6 riders) and she makes sure he doesnt pass her too:) I really hate to hold him back (but I do on occasion) because he loves trailrides and we don't do it as often as I should, and honestly he's not trying to trot/run or any funny business, its just his normal stride. He is so much fun to ride though, he has that" ok we are riding and by god we are going to do this attitude" all the time its funny. I have also used him to give kids rides at some parties my friend brings his horses to. He loves kids and honestly I probably wouldnt even have to hold the lead rope (but I do) because he sticks to me when he's got kids on who he can sense don't know much about horses. But another note, I really get my exercise too leading him around because again he walks with a purpose, and I still want him to enjoy himself too.