I agree; no there would not be a -huge- difference. The differences would be minor, and would be further back in the wave. The channeling action of GSA Tab will manifest itself further back with more strength. 90% of the wave would be identical. And on that note, 90% of surfers aren’t going to notice and/or ride that far back regularly.
For a very discerning 10% of riders, the difference is noticeable.
I think perhaps the biggest benefit to the newer tab system is the fact that the center plate was made to be a lot bigger.
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