I've schooled a variety of horses varying heights depending on their level. When I was last schooling over fences regularly, on horses that could jump big, it was about 3'6 to 4', depending, but I lost access to many of those horses and haven't had the opportunity to jump much bigger than 3 ft lately. Most of what I get on is anything so I don't neccesarily get to jump. My horse is a bit small, but not for sale, so I don't school her much bigger than 2'6, why stress her legs, she's mine for twenty more years. If I got the chance to own/lease something to move up on I would love it, I would even TRY the bigger stuff, but might chicken out in the High A/O's, 4'9 I believe? And what I school at home is usually bigger than what I show at, so, I can't say I wouldn't try a Grand Prix sized course if I could/had horse and sometime to acclimate to bigger fences, but going to show and walking onto the feild is something entirely different, but I already have my entrance music picked out!
Troubled TB ~"A thorn by any other name will prick just as deep." @-'--,---