Yes and Yes
It really depends. Here near Duluth, using a seine along park or wisconsin point can fill a 80 quart cooler pretty quickly if they are on the beach.
Or you can struggle to fill a gallon zippie.
Timing is really the big thing. And if the ice blows in it can really mess things up some years.
Chequamegon Bay had a more stable run, and it seems to last a bit longer than the run off the Point.