Take a good dump at the little boys rooom & leave all the beer on the bar the night before a regatta, take 1 paddle instead of 2, only wear a shorty wetsuite, take off all the extra gear , lines, bags, waterbottles etc and do some exercise a 2x a week.. [I do non of the above..]this all will save you easly 15~20 kg. That 15~20 kg I personally would love to have [and stay] in the structure of the boat [remember Texel 2005]