That's what I dealt with all show season with ST..not evens seriously showing. I could canter her on a pattern and she'd be fine..but try and canter her down the long side of the arena? Pfft, forget it..you went all the way back to the end gate on the rail where she'd then decide to slam the brakes on, regardless of cues to move her forward.
I can take her out to a field and canter maybe 20 yards and she'll pull up just fine, takes off in an arena though.
My fix wasn't experience though..I get to shows early and get in the arena before anyone else and run her along the rail until she wants to stop..and then we go another half lap. I figured that out (I was just trying to get her to change her lead, actually, lol) at a show after we quite literally almost ran a world class pleasure horse over..After she gets that run in and her excess excitement of cantering (she's a walk/trot trail horse..hadn't cantered until I was taking her to shows to train) out, she'll do anything I ask of her and be responsive.
I figured the first time she took off was because I pushed her on the long side..had no idea she'd take off in the middle of a pleasure class, haha. Posted via Mobile Device