The cover on the Fast (R2S pearl)is a lot stronger than on the pro stock pearl (monsoon pearl). On todays oil, my pro stock pearl has a skid/snap reaction. It flies through the front, and unleashes in the backend. Now the biggest problem with that, is it becomes very speed sensitive because of the weaker cover. A fast will give you earlier hook and more control in oil than what the Pro stock pearl will. Last years Street Rod pearl had a stronger cover than the prostock as well (Reactor pearl).
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Tommy Gollick
Storm Regional/Pro Shop staff
Red Crown Pro Shop Harrisburg, PA
stormbowling.com