What's to wait for?
You hold the gun in your shooting hand in the same area of the stock nub you'd be using if it had a full stock, bring it up to eye level, align the sights on target, pull the trigger.
Or, you use two hands (either both on the grip section of the stock nub, or one there & the other forward on the fore-end, bring it up to eye level, align sights on target, and pull the trigger.
Denis
You hold the gun in your shooting hand in the same area of the stock nub you'd be using if it had a full stock, bring it up to eye level, align the sights on target, pull the trigger.
Or, you use two hands (either both on the grip section of the stock nub, or one there & the other forward on the fore-end, bring it up to eye level, align sights on target, and pull the trigger.
Denis