Speeds bumps, etc. come at them at an angle, one wheel at a time, and yes go slow. I had a welder guy conjure up a skid plate to attach to my A1 Sidewinder collector, which was the part that hit first. I deemed that part not sacrificial, so had the heavy steel skid plate made and applied. It has worked really well. (I have pictures) Pay for octane, in the Grand Scheme, its cheap. I also had a metal butcher add a tow point to my front end for flat towing. VW tow bars attach to the torsion tube and mine was already full of other stuff and braces for the front body parts. Getting that custom welding done was A little costly, but works just right. He also had to modify the stock Empi VW tow bar to make it a bit narrower. Others here will explain about how hot is too hot for oil temps. And of course the hotter the outside air, the hotter the oil will get. You have an oil temp gauge, I assume. If it gets to far over to the right, Stop and pop the cowl. Generally it should run straight up or a little to the right. AS for your head or other naked body parts, I can only advise sunscreen. In the Speedster, I will often run long highway stretches on a sunny summer day with the top up, and side curtains off. With a Spyder, such decisions are not defined. Spyders are a rare and special breed, very fundamental in their approach to the road. Even more so than Speedsters. They are both time machines. For those of us who had similar "back in the day" we are instantly transported to a younger age. Think: Fountain of Youth. And the mechanical technology is adequate if not sophisticated, and of an earlier time. The car will teach you how it works. Work with it, and enjoy!!