What a fun thread! Really have enjoyed reading it and absolutely refuse to get into the whole weight thing.
With that said, neither of my horses have any problem carrying me, and we have ridden for over 8 hours on some trails. Yes, they do get breaks (so I can pee!, and it's often, **** ancient bladder!
ONce in a great while I do feel it is only fair to offer to put the saddle on and let T ride me home though! So far she hasn't taken me up on it!