Hi Patrick
We were there for 4 days & I was out on the water for hours every day! I didn't manage to catch any barra this time - was hoping to get my first 'unassisted' one at Awoonga (caught my first two ever with a guide some years ago up in the NT!) Will go up again next year & try again! They were going a bit quiet when I was there in June - hopefully the water will be warmer in Sept with a bit more activity. I only got a couple of catfish, darn it. We went to Monduran, but the lake was really low & the campsite a long way from the edge of the lake. Without a trailer, it was too difficult to get our boat down there without packing up the campervan, so we went to Boondooma instead, for bass! Awoonga, you can park your boat at the edge & walk up the hill to the campsite.
From talking with the locals, the most productive time to fish from a boat was dawn & dusk. I didn't have night lights on my 10ft Portabote, so couldn't stay out after dark (also on my own as my other half does not fish, so safety a factor as well.) They were tossing very small-lipped 'just below the surface' lures (1m depth, metallic finishes were good, up to 6" long) from outside the weed beds towards the edges of the weed and were getting multiple hookups. Anywhere there are good weedbeds should find barra, they reckon, on or just after dusk. Casting from the shore over the beds you are just likely to get snagged up & lose your lures. Use strong hooks & 50lb leader (minimum!)
During the day, the best trolling pattern (they reckon) was across the dam wall (you will see the big orange bouys that you can't go past) and then do a huge 'v' back into the middle of the dam and and then back to the dam wall again. Keep repeating! This follows the old river bed where the fish are supposed to hang out! The higher the sun, the deeper the fish go, apparantly! So change your lure accordingly. None of the aforementioned info helped me catch anything, but I didn't go 'deep enough' in the 'v' to take advantage of the riverbed! The Vipers were a very popular lure - outselling the others 10 to 1!
Make sure you have a big net - they don't seem to catch small barras - mainly big ones! Lots of timber past the dam wall as well, to toss stuff at - I saw a couple of swirls, but no takes. Let me know how you get on - I'll take notes for my next trip!