I have a 2000ish era GPS that might get down (eventually) to a 5' true value radius resolution. And then, every time I move, I have to wait for the resolution to get back to something reasonable. How many GPS points do you have for a 5K going through cow pastures in wide sweeping curves? How repeatable is that GPS unit? If it was me and I had to have 30 points and wait for them to get down to even that 5' best res, it would take 5 minutes per point. Am I close?
Oscar