Thermal lens and fans, best way to go.
Anti fog spray only works good if you leave it on, instead of wiping it all off. It absorbs the moisture in the air and if you don't leave it on there is nothing there to absorb the moisture.
~~Woodsballers Anonymous Club #8~~
I contend we are both atheists, I just believe in one fewer god than you do.
When you understand why you dismiss all the other possible gods,
you will understand why I dismiss yours.