I have a arctic cat prowler with a 4 seat cage on it and would like to have an . I have a roof and windshield on it so I would be looking at doing the back and sides in the back. I have some half doors I made out of 1/4'' plastic so the space above the doors would be the only area not enclosed. I am wondering what materials i can go with and if I use snaps or velcro to connect it. Will it be able to do 70 down the highway on the trailer? I would also like some zip up windows for the kids sewn in. Does anyone know where I can get this done? What kind of money am I looking at? Will a heater work in the winter if I dont enclose the area above the doors?