Can anyone tell me how you climb with this stand. The only stands I have used are sit and climbs. This stand is open front so you obviously cannot sit and climb. I notice that the top rail is collapsable so it folds flat for easy transport so I am assuming you can't place your weight on that. Do you place your hands on the fixed rail under the collapsable rail? If that is the case, doesn't the collapsable rail get in the way??