Just wondering where and which GPS units people are picking up for speed calibration.

You can get a hand held Garmin for cheap these days.

I just picked up a Magellan Explorist 210. Super cheap and user friendly. Also has the backtrack feature which is great if you keep getting lost on the Delta<img src="http://www.wakeworld.com/MB/Discus/clipart/happy.gif" border=0>. <BR> <BR>Walt, I just calibrated the PP last time out, 28 will be 28 now. Let's ride

Sounds good Ben.