Hi Sam,
I have experimented with that also. The drawback that I ran into is that the jib does not self tack very well because as the jib tries to come across it gets sheeted in tighter. It is like there is a hump or a hard spot in the track that the jib car has to pass over. Uncleating the jib and letting the sheet out a little solves this problem but then the jib is not self tacking.
Bill