No offense, but, a 4 year old horse shouldn't be run full blast in the barrel pattern anyway.. (In my opinion)
Um, is this directed at me? O.O
My mare has only been run full blast like... once in her life, and it was to cut off a longhorn calf from running through a fence. I'm not sure what your point is?
Sure, I messed up a little bit last Spring on the barrel pattern, but it's all good now, and she's doing wonderful with her training (barrels included), we're even going bridless a bit now.