I always had "flat" shaped tip until I discovered DrDave and other teachers so in order to further improve I switched to their proffered shape and was not happy at all thinking that I have to improve to benefit from it..
Recently Reyes had interview where I found out that he had his tips made almost flat as well. I flatten my tips and guess what? I can still draw good and once again I can control cueball way better.
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This is exactly my point, as well as I agree with Hawaiian also, I rather listen to the pro's, and I do agree with Floren, as recently I've been experimenting myself between Lepro's and Sniper tips, one is pretty hard, one is soft, and I love both tips, however I feel that I can put far more draws and spins with my sniper as oppose to the lepro, but in the same time and as Floren mentioned, with the long shots, I feel that I pocket tough long shots with lepro better.
I felt this before even watching the video, but it just confirmed what I believed before.
As far as the forums instructors and scientists, they do what they have to do, it is their job, even though they are teaching what they think is right, but sometimes what they think is not always correct, they just don't know that it is incorrect, and I stick by what I said, in DrDave site, there are many misinformation, as the way he experiments to deduce results are flawed, he doesn't follow the scientific methods properly, this is my personal opinion.
The quoted post here is a person who went from flat tip to round to follow drdave advice and he found contrary results, then he followed efren advise (A pro) and he got the best advice, think about it.