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@norman-oklahoma Mobile Topographer will do that. I used to use it and Lefebure for android NRTK. Enter SPC East and North, covert it to Lat and Long, give it a point name and ‘Go To’. I just used it, it went right to my driveway control point, my truck was parked on it and it zeroed on a tire. Try it, you’ll like it.
A quick look at CalTopo reveals a claimed accuracy level of about fifteen feet. Finding a pipe in the weeds or a swamp might be a pretty big challenge. I found one in a swamp 8 ft off my compass line, but at the right string distance. A review of the Garmin GPSMAP 66SR I mentioned claimed around six feet which is what grabbed my attention. Unfortunately it’s intended for mapping, not surveying unless somebody knows there’s a way. Glad to hear lots of suggestions.
Massachusetts has a free CORS network through MA DOT. You can probably find a 4 constellation rover for about $3k on ebay and field genius running on your cell phone. You’ll get cm accuracy in the open and 1″ +/- under light canopy. I actually have a rover setup I can sell you for cheap but it’s only GPS/Glonass, comes with data collector running Carlson.
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