Since we catch so many dinks on Nimrod , I carry measuring boards. The plastic ones that you drop them in head first. We carry buckets to put 10'' fish and sometimes another for 11'', then 12'' and over go in the livewell. It makes it much easier to cull by size. I also take along my fish counter
Steve48 brought me. When we get 1 each(fishermen) short of a limit we released smallest every time we keep a bigger fish. Hopefully the slabs will pick up and we won't need a measuring board soon. I've found when taking some folks this helps as some are better than other judging sizes.

