Here in Wisconsin near me are a few shallow lakes with occasional fish kills. I have found that if the lakes can go for three or four years without one that the fishing is really good. THis is because of the high percentage of litteral zone which allows the food chain to pump higher than on the deeper lakes. Also, any fish left after a kill have reduced competition, which results in great growth rates. Fish populations quickly recover as well. I would imagine with fertilization and aeration, that growth rates would remain high. A lake manager from the area should be able to customize a management plan to produce a trophy environment.
Robert B