Hi J
Haven't been there in over a month now, but the fishing there doesn't get all that hard if you know what to do, where and how to do it. I see you're planning to sleep over, try noisy big topwater lures/baits as soon as the sun starts going down behind the rockfaces, you can easily still effectively get them until around 21:00 @ night and then up and early around 04:00 again, big lures deadsticked with rattles (tubes and the likes that still has a moving bit even if deadsticked) works well around 5m away from the edge, just be sure to slack your line completely to ensure a vertical sink and not a diagonal towards the bank, once it reaches the bottom you can take up the slack and remember your drag setting, not too hard and not to soft, cause either way you're gonna lose the fish, Too hard, they are known to snap 20lb fluro, too soft and they hit structure a little later way down there somewhere and you'll end snapping the line yourself.
Best way is to hang a 4kg weight on the end of the line and tighten the drag so that the weight just pulls line of the reel, don't need to be straped to the rod for this setting action but it would be better if you could.
I hope this helps?
Oh and colour at night, anything goes.