I think that the standard plunking rig will suffice. go with a larger spinnglow (orange with stripes)and if you use long leaders put a cork on the middle of your leader if you tie on a swivel about 2-3' above your 3 way. you can slide down another rig like a wobbler or quickfish. rig that on a shorter leader than the distance from your swivel to your 3 way. with a snap swivel on the non business end put a 1/2 oz cannon ballon the snap and clip to your line and let it slide down your mainline (put a couple of large beads on the mainline before trying this). and take a
I dont know how much weight they are throwing but i'd bring 8-14 oz pyramid or bank type sinkers. some folks use bait some use scent some use nothing. go with a size 4/0 or 5/0 hook

this is what the plunkers use at Meldrum bar in oregon city.

Good luck and I hope that helped a little

Rick