After my experience with hail on our Cosmo, I ran across this:
Hail Cannon Manufacturer - Eggers Anti Hail Device
Cannons both hailed and blasted : Local News : The Rocky Mountain News
The Science behind it has not been proven or disproven, but it does make for interesting reading...
Can you imagine having this in the back of the Tow Vehicle and firing it up at the first sign of possible hail?
Kinda makes that neighbor with the loud construction non-inverter generator seem like a quiet librarian after firing one of these bad boys!!