What I do is use labs2gpx, make sure you change symbol to virtual, do a radius to include the town I will be driving through, run it. Load it into my local data base in GSAK, load into my handheld GPS. Now all the waypoints will show up as virtuals, example, I will be in a parking lot tomorrow that will have waypoints for 3 different Adventure Labs showing up, therefore can do all 3 at same time without alot of backtracking or alot of unnecessary steps in the app. I only turn on my phone's data when my GPS takes me close enough, I prefer using GPS for navigation. I also just bring up the waypoint I want on GPS and copy the cords from it to my truck GPS and the format is the same, don't have to bother to convert it and drive as close as I can, then if close enough use phone, if not use hand held GPS to get me closer. Do note, they will show up as virtuals but clicking on you will know what they are.