I can assure you as an examiner that the Nav Plog isnt difficult at all. If you cannot measure a track line accurately you have a real problem. Its much more likely that your error is with the whiz wheel. Go over finding Heading and G/S with an instructor as this is usually the common source of error.
Using Skydemon light-plot some single track cross countries and compare the Sky demon results with your own with the whiz wheel. Use several different winds.
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You also need to do a common sense 'gotcha' check with anything you take off the whiz wheel. Have you got the drift on the right side for instance. Always guestimate the answer before taking it off the scale as a cross check
Last edited by Pull what; 22nd Aug 2013 at 20:59.