Lechters book is a great resource, and it looks like Scott is having some good ideas! Thx for posting the photos, and keep up the good work!

C'petey - My reading of Lechter (and subsequent experience trying his techniques) is that the jibsheet works better, because that sail and it's sheets are a bit more sensitive to wind angle changes than the main is.

Per Lechter, I have a 4-loop latex bungie thing and another light-line block setup that I have used on both main and jibsheet self-steering setups. To get it working passably, it just takes some experimenting and an understanding of how the sheets are affected when the wind veers (which is easy enough to understand if you've sailed enough, as I think everyone here has).

However, it appears that Scott has moved beyond "passable", and is entering the realm of "Well, I set it two days ago, and there's my intended landfall dead ahead...".