This is a great idea!
A "backup" in case of jamming would be great. A range of frequencies that we could scan, or multiples in different bandwidths. Day and night frequencies to look for, too.
It'd be easy to do tbere. Lightly populated and most of it is an India n reservation which limits what state and federal law enforcement can do there. Boats are constants in the water in summer and in winter it can be crossed by snowmobile and truck.