When you have a custom symbol to define in an image, there are 3 icons you will need to use in the image layout. The first is the primary symbol: the icon you will see in the GPX file, next the Search icon (X - turn off search results), and finally the symbol overlayed over the primary symbol. The symbol overlayed over the primary symbol is the one you want, as it is, when FIND has selected it to be the only possible course. So, when you place a Custom Waypoint Symbol in your map, use the three icons in the image layout. When done, there should be two options in the image layout: \"Custom Waypoint Symbol\" and \"Create Image\" (there is no shortcut key to enter the Create Image).
Once you have the Custom Waypoint Symbol created, you can use it in a map file as any other waypoint. The symbol is available in all the proprietary map formats, and some of the modern open access ones like WGS-84.
You are probably aware that FIND is not a linear search, but rather one of many possible courses based on the current position and the waypoints you defined. But this also means that the search doesn't have a fixed radius or other physical limits, when it comes to distance from the current position. So while you can define a waypoint somewhere in the background, when you run a FIND, the search is only looking for waypoints within a certain distance, which is in this case 370 miles. 7211a4ac4a