Dave, if I can jump in...I understand where you are coming from with fatheads for smaller fish to forage upon. However the way I feel it works is that all you are doing is adding minnows that are quickly gobbled up by whatever predator comes by. At $8/lb it would take lots of money to help the small fish help the big fish. Now if they are free, (your time for seining) then throw them in it doesn't hurt. I think putting in more supplemental food used by the bluegill to put on more weight that are eaten by the bass is a better way to go.
ABout Tilapia, if they were legal in GA I would use them in my southern ponds. They occupy a little diff niche than bluegill and reproduce at higher rates. When I shocked Ray Scott's Lake he had them up to 10 inches and were hanging around the feeders. I would not consider them unless in an area where water temp is above 70 for more than 5 months.
