What a great survey in a discussion!

Ryk,
The only I would add to this mix is:
If you buy gear for dip only then you are stuck, but if you set up with
a good mast car and a pole that can double end - you have the best of
both and can do either.

If not said -
Remember that dipping needs 5 men and and swing can be 4 with that size
boat.

Mark the mast with the car height for dipping in any case.

I have found the size limit for swing is more dicated by conditions and
pole weight that J.

Matt "Bonne Ide'e"

Ryk wrote:
I'm about to add a spin rig on my Hughes 35 (I=44ft, J=14.5ft). A
little googling yields a variety of opinions on the reasonable upper
size limit for an end-for-end gybe. I think the boat is too big to
manage it with single, loaded sheets, but that it should be manageable
with separate sheets and guys. I'm looking for other opinions and/or
suggestions on what works best for you.

As for thrills, a gybe in 20 or 30 knots of breeze can be pretty
exciting no matter how it's choreographed ;-)

Ryk