Boating Safety on NH Water Bodies

[bigdog]

Determining 150' is difficult for most, but I have a way, at least I can judge.

As a water-skiing fmaily, I know that a standard water-ski rope is exactly 75'.
That being said, I just picture twice that distance ! I can usually ball-park it close enough. Works for me!

FMI, how could a NHMP make that 150' judgement anyway ? Do they have some type of electronic devices they're using which can measure accurately 'distance' ?

BD