I certainly appreciate your effort HTH and have talked to Jeff on the subject..and personally don't have a lot of optimism. I feel the standard answer of "12 inchers" time has passed. Predation from Northerns will now always be a part of Spinney. The kicker is that they were placed there on purpose (some say yes, some say no, I say yes
Northerns can't be 100% blaimed for the loss of the cuttie and brown population and whatever the reason, it's a bummer. Why can't they take some of the cuttie fry headed for Antero and give it a shot. IMHO the obstacle is A.) "sportsman" love bobos B.) Bobos are cheaper to rear, i.e. more plentiful.
All the Browns in Spinney are natually reproducing and I for one hope they can keep a hold...currently along the lines of 3% of the biomass. Don't go all bucket bio....but if so do it before the perch take over