You are probably correct regarding

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You are probably correct regarding
Posted by: adbass on Jan-30-13 8:33 AM (EST)

GPS accuracy if the original poster is talking about measurements of "instantaneous" speed, but not if the average speeds were calculated over sufficiently longer distances.
I don't know which is the case here.

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skeg measurement trials - gjf12 - Jan-27-13 5:53 PM
- sounds about right - edzep - Jan-27-13 6:24 PM
  - low drag - gjf12 - Jan-28-13 12:27 AM
- Faster/less effort with effective skeg - Celia - Jan-28-13 7:51 AM
  - Really depends on the hull shape - FrankNC - Jan-28-13 11:39 AM
    - Design consideration... - Celia - Jan-28-13 2:08 PM
    - Which boat? - booztalkin - Jan-28-13 3:48 PM
- Sorry, your test proves nothing. - scott_f - Jan-29-13 1:18 AM
  - proof? - gjf12 - Jan-29-13 3:00 AM
  - I agree about a blind test - adbass - Jan-29-13 8:37 AM
    - I would tend to agree, and... - scott_f - Jan-30-13 5:06 AM
- Accuracy of gps ? - willi_h2o - Jan-29-13 7:56 PM
  - You are probably correct regarding - adbass - Jan-30-13 8:33 AM
    - Side to side movement - willi_h2o - Jan-30-13 12:57 PM
      - But there's no need to measure that. - guideboatguy - Jan-30-13 2:44 PM
        
        Everything has limits - willi_h2o - Jan-30-13 3:55 PM
        
        agree, results will vary... - jcbikeski - Jan-30-13 4:33 PM
        
        Correct, but it's even easier than that - guideboatguy - Jan-30-13 5:05 PM
        
        Sure enough. All I did was point out .. - guideboatguy - Jan-30-13 4:53 PM
        
        There is a reason it hasn't been done - willi_h2o - Jan-30-13 7:23 PM
        
        Not that complicated - gjf12 - Jan-30-13 11:26 PM
        
        Enjoy the experiment - willi_h2o - Jan-31-13 12:25 AM
        
        The whole point - gjf12 - Jan-31-13 12:57 AM
        
        500ft over an hour - willi_h2o - Jan-31-13 2:06 AM
        
        No, you don't get it. - guideboatguy - Jan-31-13 11:31 AM
        
        At very slow speeds - equality - willi_h2o - Jan-31-13 2:17 PM
        
        Tough to measure yes... - guideboatguy - Jan-31-13 2:28 PM
        
        Display nonsense - willi_h2o - Jan-31-13 2:34 PM
        
        accuracy - jcbikeski - Jan-31-13 2:41 PM
        
        Yes, but - adbass - Jan-31-13 3:37 PM
        
        agree - jcbikeski - Jan-31-13 3:41 PM
        
        You never even read what I wrote. - guideboatguy - Jan-31-13 4:12 PM
- I seem to remember these discussions - CapeFear - Jan-31-13 2:19 PM
- best test - radiomix - Jan-31-13 3:31 PM