I've encountered the same thing. They're nomadic creatures around these parts... Could it be that they follow the baitfish??
Either way, those are some beauts!! I've broken the 40 mark for a coupla times, xept for this year. They're around though!! MSP got one this spring in the area that was in the mid 40s at least, and I've seen some BIG post spawn females that were slinking along, recuping from their harassement, but have yet to tie into one of them yet..
You get those fish this year? They put Snag's fish to shame dude HAHAAH!