Me too. Once I realized just how little difference there was as related to a recreational rider I stopped worrying about the sensor. If it is a recreational ride GPS is plenty good. If it is training it still is plenty accurate. If it is a competition the course should be surveyed with something more precise than either the GPS or the speed sensor that has its' own inaccuracies.

But, I can remember those bad old days when I, too, got all twisted around the axle with pseudo precision and tracking everything to the knats behind. Then I realized what I was doing was akin to the carpenter who measured with a micrometer, marked with a crayon and cut with an axe.