I would make a list of what you think are must haves and nice to haves. We donít live aboard but our list of must haves were no built in furniture, no vertical ladders and an outdoor space that we could sit in during a rain. We both have back issues and can not sit on built in furniture for very long. You need to sit for more than a couple of minutes while looking at a boat. Imagine reading or watching a movie for several hours, would the seating be comfortable? My wife has had 5 shoulder surgeries in the last 3 years and we have an 85 pound Lab so no vertical ladders. We wanted to be able to sit and watch the rain or sit on cool days and watch the world go by so we got a sundeck with an enclosure. As to twins vs singles, I really didnít care but rather get the boat that overall meets your needs.
If you are one there is no explanation necessary.
If you arenít one, there is no explanation possible.