You can actually use it to your advantage. It'll just give the coaches more reason to pick on you, and more reason for you to throw them out.
![Big Grin](images/smilies/biggrin.gif)
(I worked with a partner once who always wore glasses while officiating just so the coaches had something to make fun of him with. He wore contacts everywhere else.
![Big Grin](images/smilies/biggrin.gif)
)
Of of the greatest referees I've ever heard talk about the philosophy of refereeing and basketball was probably 5'6" at the most. Don't let it get to you. Enjoy it.