"Our figures are showing it is more local people supporting those games so that's our challenge."
Roach is disappointed the plan to allow spectators to bring their own alcohol into Bay Oval has not been allowed to go ahead.
"With a little bit more time we may have been able to come to an agreement with the Police potentially to have some sort of trial put in place," he said. "But we will keep talking to them over the next winter period and see if we can put something in place for next year."
Spectators can expect plenty of runs from the excellent Bay Oval pitch today.
The two Ford Trophy games this month saw the Knights make 263-6 to beat the Firebirds (240) and then in a real run feast the Knights scored 308-8 against the Otago Volts who scored 309-5 to win a last over thriller.
While Wednesday's game will end the three match Ford Trophy series at the Bay Oval, there is international women's cricket and the inaugural Plunket Shield (four-day) game to come before the end of the season. In February the White Ferns will play the England women's side three times with the Plunket Shield match between Northern Districts and Canterbury starting on April 1.