Car cover that helps prevent hail damage?

[Septembersrain]

http://hailblankets.com/index.php

http://www.autoanything.com/car-covers/60A1012A0A0.aspx

Anyone used these or similar ones?
Do they do any good?
I moved to a new apartment with no covered parking.
We do get hail here in Texas and... I'd rather not deal with insurance.

Suggestions?

[Altitude]

The first link indicates it minimizes damage from hail - not prevents it.

The second one doesn't even mention hail.

I'd be skeptical of both though this may be a case of something is better than nothing at all.

[Septembersrain]

Good point. I just wanted something rather than nothing...