ARN,
Ditto tg03--be HONEST. Do you seriously want to deceive the guy who will be filling out the lineup card? You will find that the world of baseball is a small community and it would be better for coach to hear it directly from you than through the "grape vine".
With that said, you can find the NLI at
www.national-letter.org There is a paragraph that refers to "Falsification of NLI" that roughly states that if I (player) falsify any part of the NLI or if I have knowledge that my parents or guardian falsified any part of this NLI...shall forfeit the first year of athletics eligibility at any NLI institution. Do not consider this legal advice by any strech just MHO.
I believe in following the "golden rule" and treating others the way that you would want to be treated.