The current boat with the 370 Hp yanmar performs well but i feel the boat is underpowered. I was hoping for a cruse of upper 20s and it takes a little longer than my previous diesel boats to spool up to full power. I do love the economy at 2.5 m/g and am not uncomfortable being offshore with only one engine due to the reliability of the diesels. If I decide to go back with a diesel I will go with a 480 or 540 hp cumming QSB 6.7. The cost of a reman cummings mated to the volvo DPH-C will be about 47K so cost is the same as twin outboards on a bracket.
For boat configuration I am torn between going back with an express layout vs a center console like the Invensible boats uses in it 39 open fisherman model. The 28 Bertram with its 11 ft beam would allow for a very wide console with easy seating for 6, 3 facing forward and 3 facing aft and still have plenty of cockpit space and would allow access to the bow.
Let me know your thoughts and any other considerations.. I will be bringing the boat home over the July 4 weekend and starting demolition.