That speed was a question of great debate. The boat was reading 18 knots. I didn't have my Garmin with me that I use on my maristar. iPhone GPS was inconsistent, but seemed around 13. I don't buy that considering I ride at 12-13 on the Maristar (GPS). If I had to guess, I'd say we were in the 15mph range, maybe 16. 18 seems too high.
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