From the professional reviews, BTM and BJI, only, this ball is for heavy oil ONLY. It has strictly an arc-ing ball path. Polish cannot and will not make it flippy. Polish will not make it able to be used for medium oil unless you have very high ball speed and few revs. Both reviews liked it a lot for heavy oil, but that makes a limited use ball for most people. I am not sure the Shark pattern has heavy enough oil for its proper use unless you have high ball speed to start with.
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"None are so blind as those who will not see."