LOL thanks for the pat on the back Grump lol. Well i can tell ya where to catch them but then i would have to kill ya...ROFL Consistant catching of BIG perch is hard. Jumbos i find are like maybe 1 in 15 for me or maybe 1 in 20. I like to call these ROGUE perch. They dont seem (for the most part) to be in the schools like the average size ones. I Myself for the most part Catch them In between schools. They also (for me) seem to hit differnt then the Average ones. They lift and hit upwards On my tear drop jigs rather then the quick snip and yank like the 7-9 inch ones. I also belive that it would vary on lake to lake where to find them. I mean obviosly they are big fish who have had less stress on them and better treatment in order to have gained their size. I would stick to the 8-15 depths like Grump has mentioned before. Other then that..i Think they come in and out just like the smaller ones just they might be a lil smarter is all. Good luck on finding them. Hard to always be on big fish..Sorry i couldn't help ya out more!