Its more expensive to build an F18 at 180kg than it is to do it at 165kg..
Macca,
I find your statement very interesting, since most Infusions weigh quite a bit more than the 180KG baseline (or most other F18 brands for that matter).
For instance, the boat sailed by Franck Cammas weights in at 187.2KGs.
Link to french F18 measurement certificates:
http://www.f18.fr/jauge.php?page=4&
