I have a Summit Viper SD, but I really wanted an open faced bowhunter stand. The Dagger seemed ideal for bowhunting but I couldnt justify spending the loot on another Summit climber. So I took a hack saw to the front rail of my Viper. Now I have a Summit Viper SD Open Face Bowhunter Climber. I should have done that years ago. But I probably voided the warranty.