Its still kind of hit and miss but, as stated the warmer temps will certainly help things a bunch. Keep the troller down and cover water till you hit a wad of fish. I fish from 2-7' deep. I went a couple times last week......had only 2 keepers one day and the other when it was overcast I had 21lbs for my best 5 with big fish of 7lb 10oz.
A good lake map and finding the flats and humps is key.