I am building a 18" barrelback runabout. Instaed of the standard
straight-shaft inboard drive, I am considering a modified I/O setup.
I would purchase a used Mercuiser 3.0L I/O. The engine would be
installed in the center of the boat as is normal for this type of boat
and is required for proper balance. The outdrive would be installed
on the transom. The driveshaft of the motor would be attached to the
outdrive with an extended drive shaft (torque tube), about 4' long.
Has anyone ever seen this done? Any comments or suggestions are
appreciated.