Summers finished 3rd in this event last year behind the winner Brad Kennedy, his last show of any form in significant events but this week he has put together rounds of 61 and 62 around the short par 70 layout to open up a five shot lead over defending champion Brad Kennedy and New Zealander Ryan Fox.
The 45 year old has been bogey free over the opening 36 holes and takes a substantial margin into the weekend as he chases his first PGA Tour of Australasia victory.
Summers played early on day two after sharing the lead with his opening round of 61 on Thursday. Five birdies in his last seven holes opened the gap between he and the chasers including Kennedy and Fox, the latter of whom took the lead early with birdies at his first and second hole before treading water somewhat over the closing stages of his round.
Fox was on track to become the second person to break 60 in this event's history when he raced to nine under through 14 holes of yesterday's opening round before settling for that score. In 2005 Brad McIntosh became the first ever to break 60 in an Australian event when he produced a round 59 at the QLD PGA at Emerald Lakes that year.
West Australian Stephen Dartnall put together one of the better afternoon rounds (64) to move into 5th position alone, the former world number one amateur at 11 under par, one shot out of second position and two ahead of the trio tie in 5th.
Last week's Victorian PGA Champion and former winner of this event, Gareth Paddison is in a share of 5th position at 9 under and eight shots from Summers lead, a position he shares with first round leader David Bransdon and two time European Tour winner Scott Strange.