2007 Tracker Pro Crappie

[jethro]

Hmmmmm, I wonder which will have a greater margin for error -- pitot/gauge assembly or GPS. Please come back and tell us how the two compare.

GPS is dead accurate for speed even with the built in NSA margin of error. The algorithm becomes infinitely more accurate the more you move between two points. When you sit still is when it's not very accurate. When moving, even a cheap GPS can be accurate to the 10th of a MPH.

Boy that trolling motor will be nice!