Sunbrella golf car replacement

[Northwoods]

There is an ad in The Daily Sun newspaper for Retractable Golf Car Enclosures. The web site is Club Protector Golf Cart Accessories - Golf Car Accessories | Golf Car Enclosures | Golf Car Covers | Golf Cart Accessories | Golf Cart Enclosures | Golf Cart Covers | (http://www.clubprotector.com). We have a 2005 golf car and we need to replace the sunbrella enclosure... ours attach with Velcro to the windshield and they rip off when it's windy. We'd like to upgrade to zippered enclosures and having retractable enclosures sounds nice.
Anyone have any experience with these... or any advice?