I purchased a new BOSS fiberglass blind but it has clear glass sliding windows all the way around (7 windows total) and I am looking for ideas for what other hunters are doing to cover these type windows, yet still be able to open if needed. I know I can put card board over them, a towel, duck tape, etc. However, I looking for something that can be used for years. I looked at having my wife make curtains with velcro strips, which would be great, but a lot of work. Send a few ideas. Thanks!