I was out targeting bluegills the other day and couldn't keep the bass off my nymphs. All the LMs I caught were small - I suspect males staged near nesting areas. I even got a 12incher on a 8 inch muskie fly.
For the most part, I try to lay off bass in May during the spawn but there are so many aggressive fish in shallow water this time of year it's hard to keep 'em off your hook when you're after other fish.