Hi briso,
I fish coffs mainly at Xmas time, so I'm not sure what's about this time of year! But I generally fish the eastern side of split solitary. Anchor up on the reef about 300m east of the island. Burley up with pillies, and there's a lot of good snapper around there. Have caught models up to 8kg. Also see a lot of boats head straight out from the ramp about 8-10km trolling. I generally troll all the way to the islands, had 2 marlin chase lures but didn't hook up. Solitary island not bad either, just be cautious of marine parks. Hope this helps!
Cheers scratchie!!!