I have Topo!, and can create routes, with waypoints, and can export .gps files to my PC, and then I drag and drop the .gps file into the 301's "GPX" Folder. But I don't know how to find that route when is GPS mode on the 301.
Is the BaseCamp "sync" another way of saying "I'll move the file for you"?
Edit: Corrected Drag and Drop to the "GPX" folder on the 301. I was putting it incorrectly in Current.
I needed to configure Topo! with respect to Garmin, USB, etc. (but I'm still missing something). Routes and Waypoints are now visible on the 301.Topo! can't establish the USB connection for a direct download, but it is happy to dump the file into the 301's GPX when I tell it to. Go Figure.