My boat is way under 20K but has two livewells. However it is easy to handle with one livewell in several ways. One person tosses them in a livewell, and one puts them on a chain stringer. Livewell divider if yours has that option. Picnic cooler with some ice and water in it, instant livewell (well actually a death well, but is a great choice in summer). You can put tags on one persons fish, use a fish basket etc. etc. The idea is to have the fish identifiable for each fisherman, not party fishing or putting them all in one big container. I fished for years with no live well at all, just fish basket or cooler, never any problem, actually liked the cooler option, fish were nice and cold, and already in a container, didn't have to dig them all out of the livewell when I got home and ready to clean them.