Had a little mishap with my deer blind last night. It's about 10 years old and was getting soft, but it got away from us unloading it off the trailer like we have done every year for 10 years and it ended up on it's roof...long story short, i got less than a month to build a new one....i had glass windows that slid in channel we cut into 2x4's, just wondering how you guys do your windows...looking for a better way, easy opening with minimal movement