There are no hatcheries that sell chain pickerel. I've looked and looked, wish there was... It would take chain pickerel 6+ years to even reach 24", the size where they would actually start preying on the size bass he needs removed. That is assuming they could find enough food to reach that size... If he has piles of stunted bass, chances are the food chain is hurting and there is a large over lap in the diets of chain pickerel and bass.
Hey, if you want to go exotic, why not stock some alligator gar... They can and will tolerate high temps and low DO and are known predators of largemouth bass. I doubt you really want to do that though. The solution is to educate your fishing club that removing smaller bass and many of them is needed to grow bigger bass.
