Ive purchased a 50in roll of thermoflo. This is opaque poly sheeting for my indoor grow walls. its black on one side white on the other. THis stuff is also 6 mm thick. Im just wondering wat is the best way to install this on my walls?? should i staple it up, use nails, thumb tacks , or even just tape.. if anyone has any ideas please let me know or if you have used similar stuff and have any tricks feel free to let me kno also. thanks P>S im intalling on drywall!!!!