Fish the deeper water, fish not on the banks other than dinks. Cold weather keeps the spawn delayed. I would pull jigs in 15’ to 20’ of water to find the schools then maybe vertical jig. Or troll crankbaits and fish them starting out running the cranks, 8 to 10’ down if you don’t have any electronics to locate fish. You can use the wind or the big motor off an on for adjusting your speed. Renting a pontoon,,you probably won’t have a trolling motor.