I use tinfoil when I bake a potato! That will also trap all the heat in those areas and I wonder what effect it would have on all the hoses, lines, and electrical parts over time?
One of our local forum members (justytroll) had a severe reaction to the heat on his lower legs. He tried several types of oil, both synthetic and motorcycle specific dino oil, to no avail.
We switched him over to the Delo 400, and did a TB sync, and the heat on his bike went away.
I've also had a couple forum members complain of serious heat, both before adding foil and after.
One that comes to mind had a rather unique finding....we threw everything at his bike, TB sync, CB adjustment, Oil, different shields etc. He said it was almost unbearable for him.
If I remember correctly, it turns out it was a prescription medication that was causing him to be over sensitive to the heat his bike was putting out, and not the bike at all.
These bikes really don't put that much heat out...110 - 120 degrees off the frame maybe?
Heck, try riding a new Harley Davidson Bagger, with the oil tank behind your leg, and the cylinder in front of your leg, and the engine between your legs, with no plastic to shield you at all.
IIRC they put of temps of around 240 - 275 degrees.
Almost everyone that I have found that complains about heat, had a huge aftermarket shield, and rode with it all the way up, blocking almost all the air flow!
Rant over.