Rig a staysail stay

[Roberto11]

thank you Ian and Benz for your explanations about performances and differences
I didn't have the opportunity yet to speak with a rigger.
My boat is custom made, so I cannot really speak with other owners already tried a different sail plan.
What interested me (even just to increase my knowledge ) is the "recommended distance" in between the sail on a 10 m, no bowsprit boat .
There is a rule about it or is just dictate by the experience of the rigger ??
What is your opinion??
If more information can help, please ask!!
thank you!!

As I said before I sailed quite a ot of miles with the configuration i have: a big genoa downwind or medium size staysail when the wind reinforce and I have to go upwind.
Now the staysail is ready for the garbage bin and I will maybe do some upwind and stronger wind sailing.
For this I was thinking about put on the furler a smaller working jib/yankee to use with a staysail
looking forward for your comments

thanks
Roberto

[Ian McColgin]

Length of the boat, while not all together irrelevant, is hardly the most important variable in deciding where or even if one might locate a forestaysail. "J", the distance from the bottom of the jibstay back to the mast, really matters more. And all this is assuming without evidence that yours is a masthead rig. A 3/4 rig is most unlikely to ever sport a forestaysail but 7/8ths rigs with a forestaysail inside the jib are not unknown.

What makes you think you need a forestaysail? Are you really after a way to set up a snugger rig for heavy weather, or what?

It would be fun to speculate on a forestaysail if we had detailed information on the boat, like a sail plan and hull profile at the minimum. Best have a consult with a qualified NA, sailmaker or rigger who can look the boat over and pick your brain a bit.

G'luck