Using a shotgun, you should be able to hit things with your eyes closed.
At close ranges, you can shoot from the hip.
Pistol grip, because every gun I own should have a pistol grip.
But you almost need a fore grip one too, unless you have a stock. With slugs, at least. If you are just shooting the locks off of doors, the pistol grip will be ok. But I still like the folding stock.
The first gun I got was a used mossberg 500, and I sent it to mossberg about a year ago and put the pistol grip on it cus that makes it eaiser to ship. I think they replaced the bolt, and put in the metal saftey and trigger housing. Anyway, when I got around to testing it, I was at an indoor range, and could only use slugs, and it still had just the pistol grip. It was only 2 3/4" shells, but my hand got messed up. I think I only shot it 10 times. The target was close, and I could hit it, but it messed up my hand. After I shot it, I couldn't even shot my 9mm handgun very well. I didn't feel the pain till the next day, and my hand hurt for a month after that. I think something got ripped.