Tame the tube by using a thick pouch and careful attention to how the tub ends are connected to the pouch, both tubes should tend to be opposing each other causing the pouch to be pushed open when suspended. Soft Shooting BareBack with a tube might be best for the learning phase. You obsereve the pouch being pulled a few times before shooting and this is to ensure centering the tube on the finger. Tweak the pouch upward before release.

pfshooter slingshots