I have been hired to map about 100km of XC ski trails. I am super proficient in GIS but have not done any detailed GPS work since college when I worked with some sort of Trimble explorers. This is a complex network of trails and each segment needs to be a unique feature.
I own a Garmin etrex 30. My guess is that this will not be a great unit for this sort of work. I am thinking of buying a used Trimble GeoExplorer and an antenna that I can attach to my hat so that the GPS can be in a hip pack. I do want my polylines to be accurate and if I remember correctly the Trimble points can be nicely corrected after collection. Any other suggestions for hardware? Do I even need a device this sophisticated?