Quote:
Originally Posted by Acres per Second
3) Using exact GPS coordinates, maybe a savvy Director Barrett will position two MP boats off Rattlesnake Island, select two appropriate points on Rattlesnake—and, using a stopwatch—determine speeds.
Old-tech beats new-tech! 
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Sounds ok in theory and it may work on the road with pre-measured distances but I doubt it would work on water. What about drifting of the MP boats, maintaining a constant angle of sight at the points on land, and the obvious visual deterrant of the MP boats in the first place which would probably slow someone down anyhow. There is no way to constantly maintain an exact distance (or even a close one) between the two boats to time between either. They will need to go hi-tech in order to make this happen at any level of true effectiveness.
I am going to see him at a wedding next weekend, I will ask him directly if I get a chance.