I also became unmotivated to race in the Months between May and Nov., here in Florida. The heat and humidity can be brutal. I few years ago I added a Vintage AC system to my street/strip car so I could drive it all year. I have a solenoid valve on the condenser drain line that shuts off when I shut off the AC so I can run it just about up to the water box, shut it off, make a pass then turn it back on when on the return road without putting water on the track. It makes the car so much more enjoyable at the track. I know it's more hassle then most racers want to do, but it was well worth it to me.