birly-shirly
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But you could guess the same about practicing putting with a small hole, and you'll get your feelings hurt if you ask a real putting expert about that.
Ouch!
That's the noise of Dave Pelz hearing that he's not a real putting expert.
For some reason, the thing that people don't really want to talk about in equipment generally, or blades/CBs particularly, is the psychology of your choice. I guess people are maybe worried that they'll sound shallow if they fess up to playing a set of clubs for purely emotional reasons.
But I think it's interesting to contrast Pelz and Bob Rotella on this sort of thing.
Pelz is all about feedback and learning. Putter clips and smaller holes give you immediate feedback on any stroke errors and enhanced learning, or so he thinks at any rate. He also seems to quite like backweighted, high MOI, face-balanced putters and is big on clubfitting. But he also makes an argument in terms very similar to Richie3jack's that using a high-MOI putter can let your stroke get sloppy and that you have to guard against this. In spite of this though, he seems to prefer the more forgiving putter designs.
Bob Rotella on the other hand couldn't give a monkeys whether your putter is fitted, weighted or balanced, so long as you like it. He also wants you to practice actually holing putts, and to that end wants the majority of your putting practice to be done at close range - less than 6 feet away. Make it easy to succeed, not difficult. I think Rotella would want you using whatever putter holes the most putts in practice, because that's going to build your confidence and be more valuable than any learning feedback about why you miss. Then again, I'm sure that if you're standing over an old bullseye and telling yourself - "Damn right I'm a playa wit this old stick" - he'd be cool with that.
If 2 guys with as much distance between them as Pelz and Rotella can't even make up their own minds whether a club design that maximises feedback or forgiveness is the way to go - I'm inclined to think that it doesn't really matter.
Supporting, if not explicitly agreeing with this, Theodore (D-Plane) Jorgensen felt that, in engineering terms, the physical differences between blades and perimeter weighted irons weren't worth worrying about.
Go figure, and play what you like.