I totally agree wit you about the size limit. I see the the same decline on Banks Lake . A few years back before the rule change we would catch 12" to 14" all day long, now we hardly ever catch a walleye under 15" and the fishing has slowed way down. The fish we are catching are mostly in the 15" to 22" range and you really work for them. When Sprague Lake had a 18" minimum it was common to catch and release 12" to 17 1/2" fish by the dozens then they lowered the minimum to 16" and after a couple years the smaller fish just seemed to disappear. My opinion is not a popular one but it is MY opinion, I think that releasing the larger fish with the thought that they are the brood stock makes no sense to me, I think that keeping only the larger fish and releasing anything under 18" would help the Walleye population. I believe that I have witnessed the the proof of that in Sprague Lake, Banks Lake and Moses Lake. Good luck and tight lines. Hope to see you on the water again this year.