Muskie....yes they learn,almost 100% caught and released here in Minnesota, walleye caught and kept....
Fishing muskie by mid summer,they get caught numerous times on very similar artificial bait patterns, these critters have hook damage evidence ...yet they still follow but won't bite.
We mark these follows as skis like pike are territorial and hit them at night.
Example,daylight casting,trolling, maybe one or two,with several follows,my best night hitting our marked follows is 10 skis between midnight and sunrise.its a trip night fishing with top water lures,gotta hang on tight as you can't see the strike.
My PO