That sounds awesome guys, I will do it all next session... thanks for your time and thought, much appreciated...
One question though... If my 5.9m was beautifully powered up, wouldn't a 7.5 have been overpowered? That is probably a dumb question... but I have been operating under the belief that sail size is governed purely by windspeed and adjusted for bodyweight. I got this belief from using James Douglass's sail calculator. If this is not the case then this is truly a useful revelation for me... thanks again