agreed -- more than one contest at a time and they'll just steal participants form each other. one at a time is sensable.
hmmm . . . sorta like an "airframe design extreme makeover" contest? interesting . . . might also go well as an early spring compitiion -- most everyone is still in build season, but fits with a spring cleaning/makeover/renewal feeling of the season. (at least in my head is does

). But if you're gonna officiate, unless something changes it's your call.