This limits your access to yards that handle bigger boats. Dockage is another problem. Most slips for a 35 footer are 12 ft some 14 ft. wide. Yep it costs a little more, but is better than that end of the pier spot. When I came up with the Coral Clipper 65, both of these factors played in the design and consideration of a monohull.
Power is also a big factor.
The Catfisher 34 had a pair of 50HP Pathfinder Diesels. We then drove a refrig system off them . Again a pair of 50 HP diesels would be more than sufficient. One of our corespondents who deals in Fluid drives would favor a single, deck mounted air cooled industrial diesel with hydralic drives motors. This has a lot to recommend it.