There are still some obstacle departure procedures around that require flying a VOR radial and then intersect a radial from a second VOR. Sure, I have dual VORs and the G3X has dual bearing pointers and there is always OBS mode on the GPS - there are several setups to fly these procedures that are not in the GTN database. But, it is so much easier to let the GPS navigator do the work. Although my GTN Xi won't let me enter a user waypoint at the intersection of two radials, ForeFlight will easily do this. Just enter VOR1radial1/VOR2radial2. When I upload the ForeFlight flight plan to the GTN via the G3X (Flightstream would be another way to upload), the GTN creates a user waypoint at the lat-lon for the intersection. If you don't have a way to upload flight plans from ForeFlight, just select the waypoint on ForeFlight and note the lat-lon and enter that in the screen for creating a user waypoint in the GTN. ForeFlight uses decimal degrees for lat-lon and Garmin defaults to deg-minutes, but there is a convert button on the user waypoint data entry page to change modes so that you don't have to do the math.