I have a little.20ga Nitro Special that has a short stock and choked SK left and SK-II right. It is old enough that skeet was shot singles all around and then the doubles. You could also load the barrel between each single. Someone with small hands could shoot 21 birds with the rear trigger and only have to reach for the farther front trigger four times in a round. You don't even have to reach for the front trigger it pivots, just straighten your finger the trigger moves forward and snaps back, you just have curl your finger back and your on the front trigger. It is a neat little shotgun. I bought it for my wife but I shoot it well.
