I'm no student of the swing. But I'm not sure that Hogan's swing can be improved on... for the equipment Hogan used.
The players today have built their swings around today's equipment. I'm pretty sure they would flounder with Hogan's equipment. In fact an experiment several years ago showed how true that is.
Brandt Snedeker played a round with clubs from the 1980s. He was lost. He hit lots of 230 yard drives. He didn't know which way the ball was going, or how how many scores of yards off-line it would go.
Snedeker shot 80, on a sub-6700 yard course, and that was with a red-hot putter. "On the toughest new courses, where you have to fly the ball 200 yards over water or unplayable areas, I might not break 90, 100 with the old equipment," Snedeker remarked.
Some highlights from the article, which appeared in USA Today:
"There was a 25-30 yard difference between drivers, 40-50 yards when he mis-hit the old driver. Mis-hits with his current equipment meant off-line landings of 5-10 yards; with the old clubs, as much as 50 yards off-line."
"I don't know how to explain the sound" at impact with the old clubs and ball, Snedeker said. "It feels like the ball is getting stuck on the clubface. The old ball feels so soft, like a marshmallow."
"I truly appreciate growing up in the generation that I did," Snedeker says, "because I don't think I would have grown up to be a pro golfer if I had to have played with the old stuff. It is so much different, so much tougher."
"It makes me really appreciate the guys that came before me," Snedeker says of hitting the old clubs. "The way Bobby Jones played golf, Jack Nicklaus, Arnold Palmer, Ben Hogan, Lee Trevino, Johnny Miller. Those guys were phenomenal.
"They had to be unbelievable ball strikers to hit the ball straight and as solid as they did."
In the same article, Lee Trevino says that if his generation of pro golfers had competed with today's advanced equipment: "The golf courses would have been too short."
"If we had (the new) golf ball in my day," Trevino says, "the best of us would have hit it 300 yards and Jack Nicklaus would have hit it 360."
"I'm seeing parts of this golf course I've never seen before," Snedeker said on the 12th hole. "I'm trying everything to keep the old driver on this planet."
"The biggest difference is the new ball doesn't curve as much anymore," Snedeker says. "It was a more precise game back then. The ball was spinning so much more, and it was so much harder to control vs. today's golf ball. The ball wanted to curve 20, 30, 40 yards.
"That's why you see guys hit the ball so much farther now, because we can go at it so much harder than they were able to do so back then. Back in the '60s and '70s and '80s, you couldn't go at it full bore because you could literally hit it 30, 40 yards off line.
"Every pro on the Tour, the biggest fear is hitting a low draw or snap hook," Snedeker adds. "Now the equipment is set up today where the ball won't spin enough to hit that draw. I have no fear. I really saw that today."
Look at the distances the Champions Tour players hit the ball now, compared to when they played the regular tour. I think they have gained 20 to 30 yards on average. Equipment is the reason. As Snedeker said, it lets them go after the ball so much harder. Of course, his swing is more tailored to this equipment, so he gets even more out of it.
I'm sure Rose generates more club speed. But I also believe that's more equipment-related than swing. Why did John Huston average 263.4 yards in 1989, but now as a senior tour player, is averaging 295.2 yards?
It's not true that there is always progress. In sports like track & field, there's been only minimal improvement for decades. And even that may be more drug-related than anything else.