We were in Iluka May last year and had an absolutely awesome time fishing the beaches for flathead with plastics (Shark Bay). Also fished the river trolling lures for flathead and tailor. Fished Browns Rocks with livies for some really good sized Bream. Check out Dizzy's Bait and Tackle down that way - bloody good advice and service!!!!!!!
We chose Iluka over Yamba because even in peak holiday seasons, it's not crowded.