I try to be good regarding sizes, only keeping some from about 1.5lb plus, Six is probably the absolute limit for me
That said I have put a few of that size back at the start of a day for them to go off the feed later and only have a couple of smaller deep hooked ones to take home.
Or have six in the box, then start catching much bigger ones at the end of a day.
I should really keep the live bait tank onboard all year, and do as Steve does.