When I was doing some telco engineering years ago before I retired in 2002 we hired a crew to document pole line locations for legal easement reasons. Their GPS units were in a back pack and they had an external antennae that stood about 3' high off that pack and the units were really accurate. I think what Gjersy is saying is that GPS hand held technology is the same that either a hunter or a warden would use. That GPS location would not be a survey marker which is normally most accurate utilizing all technologies by a licensed land surveyor though which I think TG is alluding to. If it came down in court to a handheld GPS and a legally surveyed property marker there is no doubt the survey would win.