Oshkosh FRS & Othersuch Frequencies

Anybody got a real good reason not to use:

FRS Channel 3 (no PL) for around the field (we found it to be the least crowded
of the channels last year, but if I catch one more kid screaming obscenities
into their little radios...).

Ham 2-meter 145.75 simplex both air and ground (52 simplex is pretty much a
zoo).

123.3 (alternate 123.5) air-air and air-ground.
Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com