Quote:
Originally Posted by goldsmi
Don't know why the entire crew would use two. When I'm the U, I use one for the down and the other for ball position (hash-post-center-post-hash).
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This.
I wear two as U. I've known a few Rs that wear a second one to keep track of the ball position along with me. (Always good to have a backup on everything if you can).
Beyond that... the only thing I can think of is maybe keeping track of timeouts for the team on your sideline or something similar.