Hey pate,
I'd go with a 4 x 3.5-3.75mb with the pin 3.25-3.5 above mid line. This should allow for good length plus very good movement on the backend.
In wanting to cover "ALOT" of boards, we'd typically like to get a ball to store most of it's energy to allow it to recover or turn the corner downlane. Hope this helps some....
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