I just finished making a dust cover for the rzr, I used the same material that they use for dump truck tarps. Should be very weather resistant! Then I just put down velcro all around the rest of it to hold it down. The velcro is sticky back and doesn't stick the best to the tarp material, so i'm gonna pull it back off and take it to the tarp place and have it sewn on also. Easy to make and I should only have about $25 dollars in it. They are good about giving smaller pieces away, I got a piece big enough to make two covers, one for mine and one for my dads. So if you are interested in making a cheap one, check your local tarp place if you have one close.