I have been doing a lot of reading lately about rapid growing Muskie and Slow growing along with What is Ideal growth for really Big Fish that is a 70 pound fish.
Fish that grow to fast die very young. If it grows to slow it never lives long enough to reach that size.
It needs an intermediate growth rate and live for lots of years to become world record size.
Georgian Bay fish meet this requirement as has been proven by the size of the fish caught there in the last 20 years.
The Green Bay fish in the Fox River area grow very fast therefore don't live to a ripe old age. they do get very heavy in a short amount of time and if one did hit the 60 inch mark at about 17 years it more than likely would break the 70 pound mark. The chance of catching this fish is like 1 in a million or more. Some of these Fox River Muskie have hit 40 inches in as little as 4 years and that is unreal to most of the Muskie Fisher People. They netted a 51 1/2 inch Muskie that weighed 47 pounds there.
The other end of Green Bay is deeper and more conductive to longer living fish with more of a chance to become record fish like the fish in Georgian Bay. Gizzard Shad are their main diet and according to the D.N.R up there it creates very heavy fish.
Now for my lake of choice Lake St Clair a wide spot in the Great Lakes System I do believe it has the potential of producing very long and heavy fish now. In years gone by we always had long but skinny fish. That is not the case now as the fish are getting heavier by the year and to back this up just check the records of the Muskie Tournament over the last five years. This past July and August produced fish of over 40 pounds. I remember when almost every M.O.M.C. Tournament was won with a 25 pound fish. I can see ahead to when there will be fifty pound fish weighed into the most of them.