Our half halt is a little leg on the barrel to get him to pick his back up, then rolling my abs back and lifting my hips to make space for his forehand to elevate, and if needed a little softening with the reins to get him to round.
hes pretty strung out on the turn on the haunches, the chiro says he was protecting himself quite a lot by hollowing his back, and halt and slow work is always the worst for him at that. he was really good on thursday, so im hoping thats all it took was a little massage and adjustment and condemning me to sell my favorite saddle of all time.
I watched your video, I dont think i need to throw away my elbows as much as the rider is in the video, i think that makes it harder to follow the mouth and not easier. Ill work on following him at walk more though.