Bowl on this all summer, every summer for past 3 years.
YOu need polished ball (or ball speed) to get thru the heads AND you need something to get thru OR around the eventual (guarranteed with Guardian) carrydown.
Also depending on how many bowlers, using how strong a surface playing the track area, you need to be prepared to move inside or start way inside with a bigger hooking ball with lots of backend. A friend used a Saga or a Mystic
and did very well by starting deep and usually going around the carrydown in the (sometimes 2nd,) 3rd and 4th games.
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"None are so blind as those who will not see."