I'd recommend reading Mule Deer Strategies by Walt Prothero. Has some good info on techniques to hunt mulies.

https://www.thriftbooks.com/w/mule-deer-hunting-strategies_walt-prothero/717005/#isbn=1585740985

As mentioned, lots of glassing and mulies go together. Also, they like "the edge", as you've noticed.

Regards,

Tom