I think you'll find that most of the top shooters use light full to full. Most people, including myself, that have a fixed choke gun find that it's choked at .032 to .034. You really can use that choke from 16 to 27 yards. If you're in the center it will crush targets at any of those distances, if you're not it really doesn't matter because with any choke a marginal hit is a marginal hit or a miss.
It's also a tremendous confidence booster when you smoke a target. Nothing like positive feedback.
When I first got into trap shooting many moons ago I obsessed over the choke. Now I have a fixed choke gun and don't even think about it. Not to brag but you can go 25/25 with a cylinder choke in a 16" riot gun. I've done it. Did I smoke any? No, but they all broke.
More important than choke is gun fit but that's another topic.
Jerry