Shape - The shape should never look square or boxy. Square shapes look man-made and unnatural. A rounded roof and angular sides will help eliminate your outline and melt into any background.

Scent Containment - Make sure your blind has a floor or extra fabric around the outside perimeter of your blind to help keep scent inside. Stake down your blind tightly to the ground.

Set Up - Getting set up quickly is your key to success. Spend your time hunting, not fumbling with equipment.

Silence - All fabric, including window curtains, should be completely silent. Avoid noisy zipper pulls or velcro fasteners. If your blind has a floor be extremely careful to not make any noise when shifting positions.

Shoot-Thru Mesh - Reduces interior movement and helps keep out bugs. Only effective in adequate light conditions. A must for big bucks and close-in turkeys when hunting with a bow.

Stability - Make sure you have a stable frame that can be staked down in all 4 corners. Attach guy wires up higher on the blind if necessary in heavy winds.

Simplicity - A good hunting blind should never be complicated...Always simple and easy-to-use. 

Size - Make sure you have enough head room for shooting off a chair.  When bow hunting choose a generous width for extra long draw-lengths.  Remember when using shoot-thru mesh your arrow must start behind the screen.  Also, extra height (over 65") is necessary for shooting off a chair or for using a traditional bow.

Stealth Mobility - To effectively "spot & stalk" you need a blind that keeps you extremely mobile. You must be able to change your location quickly and quietly without detection.