It means you can raise your mallet arm up (when bent) to receive/give checks... you'll see people nearly always then extend their arm and push people away (with their palm and wrist) after receiving a check by this method, this is what the rule tries to disallow, nobody calls it (in my experience).
Shoulder-to-shoulder is the ideal kind of contact, but some people are slight/gangly and prefer using a curled/bent arm for contact.
Mallet arm, not riding arm.
It means you can raise your mallet arm up (when bent) to receive/give checks... you'll see people nearly always then extend their arm and push people away (with their palm and wrist) after receiving a check by this method, this is what the rule tries to disallow, nobody calls it (in my experience).
Shoulder-to-shoulder is the ideal kind of contact, but some people are slight/gangly and prefer using a curled/bent arm for contact.