3 fish is plenty and 1 big fish is plenty! I too would love to see some data, but pretty sure it isn't out there. I'd be in favor of statewide 3 fish 18" for starters...and you don't get hardly anything filet wise off an 18"...but around 20-21 they add up. Harvesting the right fish to both utilize the resource and allow it to be sustainable, with an emphasis on the sustainable part! Err on the side of caution!