Tweakers!
I haven't seen this application on a jib, but I can't see why it wouldn't work. Take a standard fairlead-type pully (we'll call this the tweaker)that will accept your jib sheet. Run sheet through tweaker pulley, then through fairlead itself, and back to cockpit. Attach line to tweaker and secure. Secure other end to an inboard section of the coach roof or the mast.The load on the tweaker is only a fraction of what the winches take, so I guess you could even do it on a hand rail, but I would suggest the mast cleat. I can see a handrail breaking in a gust.It is a good idea to make the tweaker line adjustable for changing wind conditions. Quick release is a good idea too. Under way, simply adjust the tweaker line inward to bring the jibsheet as far inboard as necessary. You will need to play with the angles of course. Most guys I have seen leave the line attached to the tweaker pully to speed setup.Like I said, I haven't seen this on a jib, but I have seen it used with great success while racing on J-24's under spinnaker. Best of Luck, and let us know how it turns out. Rob RichC-27 Hull 4221