A proposed single match play-off against the Mainland champion has been expanded to the top two from each region.
Semifinals will be held on August 22 with the September 5 final giving teams a chance to equal Caversham's feat in winning last year's inaugural SIC.
Among the feast of goals on Saturday, it was no surprise that striker Aaron Burgess rammed in yet another hat trick as Dunedin Technical demolished Invercargill's Spirit FC 7-0.
Burgess has almost averaged a hat trick a game, and leads the Golden Boot race with 21 goals in eight matches, despite having picked up a hamstring injury which has only marginally slowed him down.
Depressingly impressive for other Footballsouth Premier League sides is Technical's miserly defensive record of having conceded just two goals all season.
Six points behind, but with a game in hand, Roslyn-Wakari looked comfortable at 3-0 over Grants Braes at Ellis Park, but an opportunist goal by Kieran Putt fanned the embers, and only when Ben Keat drilled in a spectacular freekick to re-establish Roslyn's lead, did the home side finish comfortably at 4-1.
Mosgiel retained third place with clear 3-1 win over the Otago Youth side.
However, it took 23 minutes before Dom Vettise powered through the Youth ranks and shot Mosgiel into a 1-0 lead.
Playing its best football of the season, the Youth side hit back and after several strong runs by Blair Struthers and Mike Still, with Aajay Cunningham sliding intelligent passes through, the Youth side equalised.
An early cross from the right found Still and as defenders hesitated, the powerfully built youngster swivelled and buried a superb shot past keeper Pat Howell's dive in the 65th minute.
Struthers emulated his team-mate with a couple of strong runs and shots, but was injured in a tackle that required play to stop for several minutes.
The break gave Mosgiel a chance to regain composure and, on the restart, Reagan Coldicott regained Mosgiel's lead with a crisp shot on the run, and minutes later Gary Hamilton-Irvine took advantage of a defensive error to clinch a 3-1 win for the Plainsmen.
At Sunnyvale, any thoughts that chunky Carlos Hermann was Queenstown's bus driver were dispelled when the South American scored twice in his side's 4-2 win over Green Island.
Caversham also showed its pedigree with a 3-1 win over University.
