That looks like the issue with the 34/34e previous version. Correct "fast" design, but to much wt for the SA to move at a reasonably rate of speed. There is a 34 shoal keel of all things near me, I've beaten it boat for boat a number of times. Rating has been lowered to match its performance. Then again, when the owner usually has a crew of newbies out of a sailing school, with them learning........I still should not be able to beat it!
SF3600 plans/specs etc should be out at the Paris boat show per HERE!
out of the horses mouth shall we say!