Slipaway said:
.....And this boat needs a traveler badly. The owner removed the traveler. Any Ideas on how to rig a traveler without a track?
As noted above, a traveler needs a track.
Without a traveler, when you ease the mainsheet, the boom swings up and out. Up reduces the leech tension and out changes the angle of attack.
With a traveller, you set leech tension using the mainsheet and set the angle of attack using the traveler. So with a traveler setup, easing the traveler allows you to change the angle of attack without changing the leech tension.
But if you have a boom vang, you can get the some of the benefits of a traveler by using the the vang and the main sheet in a co-ordinated way. You will not be able to pull the boom above the centerline with this setup, but it puts all the other functions of a traveler at your finger tips.
So, you are sailing on your course (any point of sail here). You have adjusted the mainsheet for the sail shape you want (proper leech tension, twist, and angle of attack). Now apply tension to the boom vang to the point where it is snugged up, but not enough to change anything. This will hold the boom in place (maintaining leech tension) when you ease the mainsheet. You now have a arrangement where easing the main sheet does not affect leech tension, only the angle of attack. You end up using the main sheet like you would a traveler while the boom vang maintains your leech tension where you want it.
Once you get used to it, it is a very useable system. Dinghy sailors on small boats without travelers use it all the time. They call it vang sheeting.
Here's a little write up on vang sheeting using a Laser as an example:
http://www.v15.org/articles/MainsheetTrim.PDF