On July 1, 1993 at the International Rally in Bismarck, N.D., there was a terrific hailstorm that caused an estimated $8,000,000.00 in damage to Airstream trailers. I have one that was there, and the dents are very visible on the roof. Roger Roger Hightower WBCCI #4165,VAC 1975 31' Sovereign Mesa, AZ