I bought two mounts from Amazon that seemed to solve the issue I was having.
The first one screws into the saddle and mounts very nicely with enough room for an average sized saddle bag to sit behind the radar. Check to see if your saddle has the screws for this kind of mount
The second option is a little cheaper but mounts to the saddle rails. I haven't used it yet but I feel like I would definitely trust it if I needed to use it in the future
This might work, but the saddle bag pictured is small.