I beleive our current regulation of 1 over 24″ is just fine. There is no need for further regulation, even to attempt to produce a trophy channel cat water.
For one thing, there is very little pressure on channel cats in Minnesota. Trophy waters would be occuring naturaly. You need to have the right natural ecosystem to produce trophy fish, you can’t just put a regulation on any water and expect it to produce all 20 to 30lb fish.
You also can’t compare the regulations of the Red to our waters. For one thing the regulations did not produce the trophy fishery on the Red. It existed before the regulation. It may have had a part of maintaining the fishery but there has been no studies in Manitoba to prove that it has had any part in maintaining that fishery. Heck there has been no catfish studies on that water at all.
What is obvious however is part of the reason the Red is trophy water is its ecosystem consisting of a very LARGE body of water that provides and endless source of forage for channel cats.
If you take a look on the state side of the Red, there are no flatheads competing with the channels which helps to produce the larger than average sized fish in those stretches. Further south on the Red where fish are smaller, its simply due to the size of the river.
Your not going to produce trophy cat waters by trying to play mother nature. If the waters don’t have the resources to produce large fish, no amount of regulation will do it for you.