How often do you tack?
The concept of self tending jib congers the picture of a sailor who dosen't like handling his sails. So much flexability is lost. If the headsail boom has to clear the main mast, there can be no overlap of the headsail and the main. This, in my understanding of the dynamics, would reduce the acceleration of the air passing between the sails and the Bernolli effect (high volocity=low pressure) would not reach it's full potential. It's only two sheetlines and you only have to handle one at a time.If a disability and/or mobility isn't part of the decision why not just get rollerfurling (this is also a compromise) and enjoy morel potential of your boat?Having said all that, there's absolutely nothing wrong with self tending sails if you want to handle the tiller exclusively.RespectfullyLarry Barnes