I tried the calculator on the zone site below.
http://www.zoneperfect.com/site/content/calculator.asp

As an experiment, if anyone already knows their BF% and you have 5 minutes, how about trying this calculator and compare the results to what you know. It'll be interesting to see how they compare.
I don't have an accurate reading but it says my BF is 28.8%

I think I'm going to have to get a decent set of calipers. Or contact a nearby college about the procedure.