In case you were wondering, it appears the dogs can go at least 24 hours at one time on the boat (at dock) without complaining. I think I was more worried about how they were doing then they were. They mostly slept. That we were all together seemed to make them perfectly content. They didn't even run to the grass when we went out this morning. I think they could go longer, not that I'd want that. After a day on the boat, we will need to start working on how they will... you know... on the boat. All in due time.