At Preliminary and Novice levels an ordinary snaffle bridle must be worn, at Elementary to Grand Prix level dressage competitions under national rules a snaffle or double bridle may be worn, whilst at Prix St Georges and Grand Prix dressage levels under FEI rules a double bridle must be worn.
Any bridle must have a noseband and this can be a cavesson, drop or flash noseband with a snaffle bridle. Double bridles must have a cavesson noesband. Grackle nosebands are only permitted for eventing.
Hmm I haven't checked our rules for a while. Thanks! But it is only optional at PSG and GP level at national events in the US and UK.
ETA: might need to start campaigning to change our rules, I don't particularly object to double bridles in good hands but a choice should surely be offered here as well - not like a horse gets an advantage with a snaffle bridle! Posted via Mobile Device
Yea I don't get why it has to be mandatory. Its optional in dressage for the top levels of eventing. I don't mind a double bridle. I don't find much difference riding in it compared to a snaffle on a well trained horse. At the end of the day its your seat that does the work, not your hands.