If you are pressed for time and the fishes are finicky, getting something to bite quickly with the least amount of effort is very important. During my visits to SOF, that's what I discovered. You have to really downsize the bait to get the fishes' attention.
Every time I arrive in the area, the fish were almost always not in the mood. Maybe because the water was muddy or maybe they are so familiar with our baits that they have learned to avoid them. I tried all the hard baits that I had but, except for an occasional dim-witted Janitor fish, no takers.
That's when I discovered to try to and really downsize my baits. I tied on a 2-inch Berkley Power Minnow and a 2-inch Java stick on an Owner 2x 4-gram jig head. As soon as I dropped these baits, they got hit by Pacus and Barras instantly. It felt that the water lit up with excitement every time I use these baits. When fishing for these fishes, I use a PE 1.5 main line and a 15lb flouro leader. With a slightly heavier line and leader, landing them was not a problem. Just make sure that you are using quality jigheads because cheap ones will only get mangled.
If you will try this method, make sure your main line is at least PE 1.5 and your leader is a fluoro carbon leader with a minimum breaking strength of 15lbs. This will allow you to land the fish quickly without tiring the fish. Always make sure you have a landing net, a long nosed plier or better yet a surgical forcep (you can get one really cheap from popular drug stores). This will allow you to remove the hooks without damaging the fish.
If you plan to go to SOF, check your gear and make sure that you have the correct baits and appropriate line, leader, jigheads. Making sure you are using the correct tackle will help Irving's very wothy cause.