Working on Motor Well Design

So many good ideas.  Kick up rudder mount, transom mount, tube style motor well with skeg?  Which would serve best?  Which would make the least impact on a future  restoration allowing for the installation of the original one lung hit and miss banger?  I am leaning strongly towards the skeg and tube option. A steel bar would complete the protection of the motor. It would need to be removable for the installation of the motor.  No problem there.  Here is a sketch—click on it to enlarge.

Not very pretty, but fairly in scale. The steel would run up the transom and onto the skeg enough to be bolted in place.  Since the skeg will be of 1 1/2 spruce, I suppose the steel could be the same width by one quarter? The thru hull threads fit nicely into a threaded 1 1/2 inch PVC coupling which in turn accepts the 1 1/2 inch pipe. There would be the same thru hull/PVC arrangement at the top of the pipe as well.  The top of the unit will be supported by a thwart of some sort.  Altogether makes a fairly good support at top and bottom for the shaft.  Not sure how the steering will be accomplished but should not be too much of a problem.