I have had a sway for a long time. Usually it's been caused by my swing getting to long and my back swing continuing past my shoulder turn.
In the first video I posted my focus was stepening the back swing and shorting it. Compared to my swings from yesterday I felt like my first video was much better with that. I still can't repeat it.
This second video I didn't care about anything but how my hips were moving. Strike didn't matter to me.
Next week hopefully I can blend the 2 things better and of course get the face on view video. OOPS!
The problem (for me) that I see is that there are so many "ways to swing" and they all seem to contradict each other. It's truly amazing. But I fully agree on the ball flight laws so I think for the "average golfer" to enjoy golf, he needs a swing he can repeat and that keeps the ball in play. What you don't want is the uncontrollable swing that sends your ball OB.
YES, short game, putting can kill you and make you a bogey golfer or worse, but nothing slows play and makes you feel lousy like sending a ball OB.
So find a repeatable swing through lessons and if you can't do that, then pick ONE type of swing and see if it works for you. WRITE STUFF DOWN on the range - yes, hit the range. Write detailed notes on what and what is not working. Go back the next time, read your notes and try again. When you think you might have something going - then hit the course and read your notes and see if it works. If you get something going that is repeatable, you will get to the point where you can start forgetting everything and just play. If you start screwing up, check your notes.
Now if you want to go beyond casual play - then I would take lessons at the earliest opportunity from the best teacher you can find. They tend to be very accommodating for juniors that want to be really great.
All that being said, I found lessons to be really affordable and quite fun. I think that for better or worse, the same thoughts that make golfers buy a new driver and putter etc... especially when the putter is totally different are maybe the same type of thoughts that try different swings and "tricks" and thus starts the cycle of decay
Most of the good retired guys I play with have a repeatable swing and old clubs. They have fun.
Went and played a little par 32, 9 hole course before it starts raining down here. Missed a couple of birdie putts but I was extremely excited about the results. For the first time ever I broke 40 by shooting a 39 and also for the first time I caught the ball just right on a drive and hit it 310 yards (slightly down hill but I'll take it). Swings just all felt right and, if I didn't have a couple of shanks which put me in difficult positions under trees, that score would have been a lot better.