KEY POINTS:
National jetsprinting action moves to the South Island tomorrow when the Brassells Bridge circuit near Timaru hosts the event.
The "big block" battle will be fought between current national series leader Bryan Smith of Taupo, Daryl Hutton of Putaruru and 2008 class debutant Duncan Wilson of Waitotara.
Both Hutton and Smith took damaged boats home from Timaru in 2006 and 2007 and are aware that the smallest error there can result in a big crash.