I started using an open stance awhile ago. It's worked great for me. Then I discovered Steve Johnston's Eureka golf swing and have fine tuned mine.
I'm 65 and it's an easy swing for senior golfers to use I believe. Here's what it does for me. Easier to swing in to out. Allows for hips to open up earlier and get thru the shot. More consistent swing bottom. Tighter dispersion. More solid strikes.
I went to an open stance last year and have watched a lot of Steve's stuff. Like you, I really like this set up and I think the swing is much more body friendly. But, I must say, I have really struggled with accuracy since moving to an open stance. I used to hit several balls a round pretty tight to flags, but since going to this stance, I rarely hit balls tight. To be fair, though, I did go to a different set of irons around the same time, so that could be the cause, too.
I always had a problem swinging too far left. This stopped that. If anyone is a slicer this would help with that. Also, with an early release my swing bottom was an issue. This helps with a more consistent swing bottom.
Also, I seem to do better if my rear foot is square and not flared. I flare my front foot though. It'll stop swaying and hanging back. I think this swing would work for a lot of golfers.
I have been looking at this as well. He is an advocate of the weight forward a la S&T. Are you adopting that as well?
No. I'm 50-50, but keep my head centered and don't move off the ball. But I can play with the weight more on the left side. Also, because of the open stance the ball is played slightly back in your stance or at least it looks that way visually.
Might have to play around with this a little bit. I think about how many times I've needed to hit a cut, opened up my stance to help in doing so and absolutely smoke it.... dead straight 
It happens more often than not for me.
I started doing something similar years ago with my irons and it really helped my consistency, but lately I can't seem to replicate it. I never could translate it to a fairway wood or driver, but it was money with anything shorter than a 5 iron. Now I'm just more likely to hit a pull draw with the open stance.
I think that if I tried that three rod drill in the OP's video I would beat the shit out of that outer rod.
It's a good drill that triggers the appropriate degree of hip rotation on the downswing, specifically square when left arm is horizontal and forty five degrees open at impact.
I have monkeyed around with something like this earlier this year. Open stance, ball back in stance. Only used it with irons and it worked pretty well. I got a little more distance with irons because I was compressing the ball much better and not hitting the ball high and right.
Sneakylong
Don’t you find that it really restricts your backswing, unless you have a naturally long one? If you have a short backswing and struggle to turn back, I don’t see how this can help . Perhaps, you can give me your feedback or thoughts on this: Thanks
KCee
Exactly, my experience with it. Does it require an open face?
braveheart I probably don't know his system well enough to be commenting, but if I recall correctly, Steve teaches that the clubface should be perpendicular to the outside rod, which means that he teaches an open fact. Again, someone who knows his system better might be able to comment more authoritatively.
I played around with this a little today at GG. It actually worked pretty well for me. I kinda have the opposite problem than the backswing thing you mentioned. I can turn back fine but I'm thick so I have issues turning through my lead leg. Opening up my stance but keeping my shoulders square helped me turn all the way through the swing.
Hoss7504
Your feedback confirms who it logically works for best. Though in my past attempts with it perhaps I did not follow the ball position and clubface angle setup advocated by the Scotsman. May be fun to experiment with again.
We have talked about this before. This system is obviously almost a direct copy of Triangulaid.
No issues with getting enough turn in the backswing. Again, the two biggest benefits for me are my path doesn't go left and a more consistent swing bottom. Less fat shots etc..
Also, most hackers never get their hips open enough at impact, especially us seniors. This presets your hips more open. Helps stop early extension if you have that issue as well.
I was using an open stance before I found Johnston's Eureka swing with great results. This just fine tuned it for me and validated what I was seeing in my swing using an open stance.
Works for every club in the bag. Haven't tried it with the putter yet. If the putting goes south I'll give that a whirl as well.
Here's the thing. Don't over think it. Set up with you feet aimed left (30 degrees). Square your shoulders to the ball. Then swing with the intention of swing to the right. I don't always take it back inside like Steve does.
If I want a draw I will, but much if the time I take it more straight back like Bubba Watson.
Also, I have a steep swing like Bubba. If I want a more shallow delivery I keep my left arm below my shoulder plane. Play with it and see what works for you.
Sneakylong
So are you saying you didn’t have a limited backswing before using the open stance? If so, then it would not affect you as much. By the way, Happy thanksgiving.
My swing is generally short of parallel. But I could swing to parallel if I wanted to. Don't worry about the length of your swing. The length doesn't matter imo. Also, I just looked at a video of my swing.
To me it looks like I'm ~ 30 degrees open with my feet, but on video it looks less. Experiment. Happy Thanksgiving as well!
