Hey Rob,
Another tool that we have been using is this HeyWhatsThat site which is great for a panoramic Line of Sight tool. Its good for setting up possible Meshtastic Repeaters so that we can see where the Repeater can cover realistically by LoS and where it may be best to set up a separate repeater.
There’s also a Path Profiler tool that can be used made by the same people. Which I haven’t personally had the need to use yet, but is an interesting tool that can be used for more of a technical look at everything.
Cheers,
Blayden