Cullen displayed his class around the Palm Meadows layout over the opening two rounds, a six under par 66 today to go with a 68 yesterday has him at 10 under par for the tournament.
Adam Crawford and Ben Bloomfield are in joint second on six under, while a group of four players including Andre Stolz find themselves a further shot behind.
Conditions have been far from conducive to low scoring, with blustery winds making shot selection extremely difficult during the opening rounds. For Cullen however, who is the current Indonesian Open Champion, difficult conditions are something that he relishes in playing.
"Palm Meadows has been a great test over the opening two rounds and I can see why it has played host to so many great players and tournaments over the years," said Cullen after his round. "It will again be a test over the final two rounds at Royal Pines, but it is a place that I have fond memories of so I am really looking forward to the challenge ahead"
Cullen has a good record in events at Royal Pines in recent times and given his growing status as a player is expected to further that record over the final 36 holes.
Chris Campbell, who held the lead after the opening round with a five under par 67, could only manage a two over par 74 to slide down the leaderboard 17 spots.
Round three will get underway at 8:30am tomorrow morning at the RACV Royal Pines Resort. Professionals will be looking to make progress on the leaderboard to ensure they finish the four Regional Jeep events inside the top 60 on the Australian Jeep Tour money list to secure their place in the Jeep final which is to be played at Royal Pines in early December.
This week's event is followed in by one futher Jeep State Championship in WA in early November before the final.