drakewoodie,
I don't have access to all the sampling data and harvest data for blues at Milford so I won't make any wild assumptions.
The daily creel limit on blues at Milford was dropped from 10/day to 5/day several years ago which obviously limits number of blues that can be harvested but doesn't have any impact on the size of fish that can be harvested. Some states, such as Oklahoma, have gone to "one over limits" on blue catfish as part of the daily creel limits. An example of this type of limit would be "one fish over 30-inches per angler per day" which would spread out the harvest of those larger fish.
El Dorado Reservoir currently has the 35-inch minimum length limit in place on blues. This regulation was put in to place in 2005 to protect the young population from angler harvest until it was mature enough for natural recruitment. The regulation has worked well and the blues are now producing good year classes and will soon be able to withstand some angler harvest without suffering ill effects. The 35-inch length limit will be repealed to allow harvest of the smaller fish. In order to further assist in the development of the trophy potential of blue catfish at the lake, harvest regulation options such as the 'one over limits' are being explored. This type of limit would allow for the harvest of smaller fish while protecting the larger, older, more valuable fish so they may be caught multiple times before being harvested giving additional anglers the thrill of catching a trophy sized fish in Kansas water.