thanks for the tips!
unfortunately, i didn't see them in time to put them into use. however, i get back there a couple of times a year for gigs, so the info will definitely come in handy next time.
i can report that Champlain College student center has two 7' tables, and right in the space i was working. however, i've never seen tables in such horrible shape. literally worn down to bare slate, you could see the slate seams, and i can't imagine where they got the balls, they looked like old clay balls.
so next time we'll hunt up Van Phan's; thanks!!