Join Date: May 2009
Location: Winnipeg, Manitoba, Canada
When you say pony, what breed are you referring to? Actual ponies can actually carry far more weight easily in comparison with a horse. They're built differently, hence why you often see adults riding tiny ponies like Gotlands with ease. There were a bunch on the endurance ride last summer and I swear they couldn't have been much taller then 12hh. They were on a 15 mile ride with smallish adults (the heaviest probably weighing about 130lbs). They had absolutely zero issues handling it.
I have a 14.3hh Arabian, which are also designed to be typically very hardy due to their short backs. I'm working at losing weight but right now I weigh in at 185lbs. At my heaviest, I was closer to 200lbs. Now, I know my weigth affects MY riding, hence my resolve to lose it. But Zierra definitely doesn't have a single issue carrying me with ease and prancing all over the country side for hours.
In my opinion, the average 14.3hh horse or pony typically doesn't have much issue carrying up to about 300lbs. You regularly see smallish stock horses doing cutting and roping with big beefy cowboys on them.
I don't base much of anything on a "20% rule" because it's like telling people they fit into a certain BMI category. We're all built different, and it's a case by case basis.
I hope God tells her to smash her computer with a sledgehammer.