Now thats an answer I'll take time to work out...Thanks
Thanks VNAVPTH,
that will take some time to wade through. Some of the refs you made are unfamiliar so i will take time and work it out. I guess some aircraft must be more prone....the carriers that allow free boarding obviously take it into account and the 4 jet I fly certainly doesn't have the same issues with the moment arm of individual passengers. We traditionally were kind of free boarded but not quite in a Ryan Air/EasyJet style.... Anyway..i will be approaching the despatchers for the carrier involved for their answers to my question and see if it is as comprehensive as you have eluded to here. Thanks for your time.....