Yea, sandbags are the preferred method. Problem is, there are quite a few people that still think having a truck makes you impervious to poor driving conditions

Yea, sandbags are the preferred method. Problem is, there are quite a few people that still think having a truck makes you impervious to poor driving conditions...and they skip the sandbags. All metals will corrode in the presence of salts. Though aluminum does not exhibit rusting like steel does, it will develop a chalky film and pitting in the metal surface when exposed to salt for long periods. I believe that this is aluminium oxide. Some reading: http://www.boatingmag.com/how-to/maintenance/protecting-aluminum-boats-salt-water-corrosion http://www.boatingmag.com/how-to/maintenance/protecting-alum...