They are 4 or sometimes even 6 berth boats so yes you lose a berth however gain heat. I would be tempted to go for an electric outboard, however that would raise its own issues. The permanent mooring problem is that for at least the next 3 years I have to be in certain places in Birmingham and Solihull. That said there are a lot of storage places close to the canal however, some of the moorings have no power or other facilities. As a plus, there are lots of student-related services in the centre. I would like to continueous cruising however, I think practicalities may force a mooring. Ideally in central Solihull however, these do not seem to exist. Van life-wise, I would recommend Lee Blake as it not just how he does things, but more his philosophy behind his changes. https://www.youtube.com/playlist?list=PLvy-UroOFYySJtAjlNDacDy4Rrl0E2lNs