Homemade enclosure kit

Just wondering if anyone out there has tried to enclose their rzr from the elements without going out and spending the money to buy a cab kit. I own a 2014 rzr 800 and already have a front/back windshields, roof, and prp doors and I can’t justify spending 800 bucks for the kit when all I need to do is make some windows to seal it off. We use our rzr during hunting season and it’s still too cold in the winter to bundle up and tough it out. So I’m wondering if anyone else has tried to make windows and what would be the best approach to starting this project.

Thanks in advance!