Just enforce a pp size of exactly 2cm, the staff will check you just before the jump & either cut or fluff you to specification.

... but while on subject - since they use (size regulated) skis as part of the equipment, why don't they allow for like (size regulated) beaver tail buttplugs that the athletes would manoeuvre to their advantage (gliding & prolonging the jump, tho the best amongst them would actually flap it vigorously for extra lift).