Stampman,Lived amile from Erie most of my life so I know what ya mean about the zebra mussels but you also have to figure in the Goby and other non native intruders that have gotten into the ego system.Another thing,walleye fishing in the months of April and May has been stopped on Erie along with creel and size changes but not on the Detroit River where a lot of the fish are females.Alot of those 9-12lb+ fish that are caught are full of eggs.With a couple of hundred boats out on the weekend and most everyone catching fish,seems to me that puts a hurt on things also...I know some guy's that has fish Lake Weiss also and I guess that it is an awsome crappie fishery...........