Whether there is enough appropriately sized forage to grow LMB beyond 6-7 lbs will be evident in the condition of fish in that size range. So a fish that is continuing to add weight spends at least some time each year notably above standard weight. Either Northern, Florida, or F1 LMB are capable of growth beyond 7 lbs so if condition appears limiting at this weight then the source of the problem is probably forage. IMHO growth to 6-7 lbs is pretty darn good and would exceed what most see without active culling and other management. From here however, I think it is mostly a numbers game where fewer LMB will allow remaining LMB to grow. This reshaping of the population structure can also set up the conditions that justify forage introductions that favor the larger fish.