A small boat makes cooperation difficult to postpone politely.

Some spaces remove the option of dealing with things later. In a boat, every movement affects everyone, there is nowhere to withdraw to, and a small disagreement about who does what gets settled roughly when it appears. Larger settings let you avoid a person for weeks and call it getting on with the work. Constraint is not the enemy of goodwill, it is often what forces goodwill to become practical.

Think about a relationship where distance has been doing the work of resolution. Arranging one setting where you cannot easily drift apart, a long drive or a shared task, tends to surface what needs saying.