Brian Manzella has random live Webcam chats on his site and just had one a little while ago.
One of the questions I asked was why he thought guys like Hogan (and other golfers thru time) were able to get that different sound at impact than other golfers, including Tour pros.
This is a question I had to ask because thinking about Hogan for a second, he certainly wasn't the longest golfer, yet his shots made a much different sound. So I was thinking he:
1. Probably was hitting a different part of the sweetspot to some degree.
2. More or less compressing the ball better and more often than the other golfers.
Brian's thoughts were more along the lines of this:
Forward shaft lean with minimum downward strike. Sounds simple, but probably difficult to do.
Usually when a reader asks me about Manzella's teaching philosophy they ask me why he doesn't like forward shaft lean. My answer is that he doesn't hate forward shaft lean. But usually forward shaft lean means the golfer is hitting further down on the ball and that forces the golfer to 'swing left' in order to hit the ball dead straight.
So, if you have a lot of forward shaft lean, you'll have to increase the amount you need to rotate the plane line to the left in order to hit it dead straight and that becomes more of a guessing game.
OTOH, if you have minimal forward lean at impact, that means your attack angle is probably less steep and that means you can rotate the plane to the left less.
Let's say you get 2 golfers both hitting 7-irons. If golfer A is hitting his 7-iron with an attack angle of say -6*, then that golfer will have to rotate the plane somewhere in the range of 3* left, in order to hit is DEAD straight (face angle is important as well).
But if golfer B hits their 7-iron with a -1.5* attack angle, then their plane line needs to be rotated in the area of -0.75* left. Which really isn't much.
Very difficult to have a shallow attack angle and still maintain a FLW at impact.
That's why most PGA Tour pros hit down on the ball quite a bit. The Tour Average attack angle with a 7-iron is -4*. And that's why I tell golfers that they need to hit down more on the golf ball because it helps them execute a FLW at impact easier. And you can still hit really good golf shots with a bit of downward attack.
But Manzella's thoughts are that Hogan obviously had the shaft lean, but didn't have a real steep attack angle. And I'm guessing probably a shallower attack angle than the Tour average. This allowed him to hit the ball every so slightly higher up on the clubface and he was taking a shallow enough divot so the ground wouldn't effect the sound.
Remember, we are talking about *sound* which has a great correlation with good shot results. But if you want to get rid of the flip, I suggest you learn to hit down far enough as one of the very first steps to eliminate it from your swing. But, Hogan's *sound* of impact is a thing that non-flippers can probably better obtain if they grasp how to have the forward lean while minimizing attack angle.
Of course, that's just our thoughts for the meantime. But Brian started floating an idea around his head of making a video on the subject using Trackman (which he now owns himself) and some type of microphone system that would measure the sound frequencies and then how to achieve it.
Sevam1 makes that type of sound on a consistent basis as well.
And it doesn't appear that he has a very steep attack angle either, nor does he preach it. The same thing John Erickson preaches as well. He doesn't want big divots as Moe Norman once told him 'bacon strips not pork chops.'