Hi Paul.
Here is my humble opinion, whatever it\'s worth. Last season I trashed
the reversing mechanism third day on our 4 week sail with my family.
Yeah, panic! Unbelivably I managed to find a used -94 Honda 9.9Hp 4
stroke w electric start for only $350. 24 h after brakedown we were on
our way and ever since, I LOVE IT!
I\'d like to agree in most of what Jan and others are writing. A few
comments though:
1) Propeller pitch can be adjusted to boat, but size of prop will
likely be smaller. This will give you less grip in the water, most
notably when using the reverse to "brake".
2) I have a -94 9.9 Honda 4 stroke, and it will run more than 4 h per
gallon if not pushed too hard (5.5 kn). Much less than your old O21.
3) An outboard can charge your battery (more than your 11 A dynastart)
but much less than new diesel would.
4) Nobody mentioned handling so far. I\'s a dream! I sit on the stern
with one hand on the tiller and one hand on the engine. You wouldn\'t
belive the maneuvers possible...
5) Noise is not a problem with a 4 stroke engine. My O21 had the
original dry exhaust system and that made much, much more noise.
(Original quote: "No dad, It\'s not a helicopter. It\'s a VEGA"

6) I\'m not sure about the performance advantage. Since the weight is
so much more astern, I guess the difference is very small.
I don\'t know of the wether conditions where you sail, but the prop
coming out of the water "all the time" may be reason enough not to go
for an outboard. In the baltic where I sail, it\'s really a small problem.
Again I agree with Jan. If cost is not a very big issue, go with the
inboard. For me is was not a realistic option, but I\'m VERY happy with
my outboard.
Best luck and wishes,
/Peter Szendröi, VEGA 419