|showing world, there is an attitude that once a horse's mouth is mature enough for a pelham/double and the rider has the skill to ride in it, that they should be ridden in it consistently. However, the number of things the showing world thinks should be done which collide majorly with proper dressage training is pretty huge, and there's a reason you can always spot a dressage-trained horse in the show ring - they always move up the line after the individual show.|
I know for a fact that the philanderer and Humdinger (both HOYS supreme champions) are schooled in their snaffles and hacked in ones.
I do not know of a top show horse that could not be take out tommorow and put in a medium level test and do well.
Heck show hacks could probably do advanced medium with thier riders riding one handed! I know one show hack that is currently working to PSG level and still being shown!