Yeah the heat shield i think wasn’t a great fix, the bigle fan seriously makes it so much cooler in the cab, cheap fix. Some put a closeable vent behind it in the seat base plastic and reverse the polarity to add heat, but really in the winter if you want heat there is a little access panel below the dash in the center floor board that if you remove the radiator fan blows nice warm air in the cab.
I ride mine all year but in the hot summer heat of the midwest, it was a must to remove as much heat as I could. I put the bilge fan on a switch and don’t use it in the winter.