Re: GPS is not Radar
"Difficult as it may seem, you can tell engine sounds apart -- and not just outboards vs inboards."
My point wasn't that you can't tell engines apart by sound. My point was that by engine sound *alone*, I find it somewhat hard to believe you can tell a bass boat with, say a Mercury, OB from a Whaler (or some other low deadrise boat) with the same Mercury OB. Or analogously, an old VW Bettle has a pretty distinctive engine sound. Transplant that same engine and exhaust system to the back of a Meyer's Manx and now tell me you could differentiate between the 2 as one passed by the back of your house at 40 mph. Now if there's no road out back, just a bunch of sand dunes, you might guess it's the dune buggy but that's using more information than the distinctive engine sound. You might well opine that the OB powered boat you hear waaaay early in the AM on a rainy or foggy day is a bass boat because it would likely fit the conditions but this again is using more than engine note alone.
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