I'm not sure if the new slot size of greater than18" is the way to go. I would have thought that the previous slot of less that 15 3/4" was more geared to protecting the present time mature spawning females?
I would be curious to get a quick read of these studies.
Maybe closing the lake for a few winter seasons would be better? But, of course, that wouldn't interfere with other activities on the lake.........
Mike