That the stand tapers down conically, is ansich okay for me, so the bag is filled not bulging, and you also get to him yet. On the other hand, the withdrawal is a real skill practice because under the bag, a vacuum is created when it is full and will be removed. The usual quality yellow bags then leads easily to tear. Maybe a hole for pressure equalization during the removal would be below useful or you have to stop practicing until 5 bags, then go that way.
