Chris,
You have to give us some kind of idea what you are working with here.
Are you mounting a track or just a ring?
Are you racing or cruising?
Will you be running an A-sail or symetrical?
And if the latter how broad shouldered?
And lastly,
What are I (hoist height) & J (mast to stem head) of this rig?

Some one here can help, but shoulder hight is not necessarily a good
answer for all cases.

Matt Colie


Chris wrote:

How high up on the mast should I put the hardware for a spinnaker pole?

Thanks!