I'd like to find a video that shows a horse "upside down", fighting against going on the aids, doing a giraffe on crack imitation - and then that same horse going nicely, through, submissive, engaged, round... yada-yada-yada.
Failing that, two separate videos that show this.
Approved helmet: Every time; every ride.
"When a sport gets to be predictable it ceases to be fun." - RAR's wise brother