Umm, you know, in all honesty, I bought that cover from Rocky Mountain Motorworks shortly before they went out of business and when it arrived I stuffed the cover into a duffel bag and haven't ever had the need to use it

(life in AZ I guess

). However, because my Cab rarely sits out in inclement weather these days, my all-weather cover for it is a rather "cheap" one. I see your Cab is a '97? If so, I honestly would recommend the all-weather cover Volkswagen sells (if they have still sell covers for the Cabrio); I've got one for my Jetta and it's awesome (except in wind). It cost around $125-150, but it was worth it, in my opinion. If not, either way,
http://www.autoanything.com sells all-weather covers (don't know if any of them "repel" hail).