RE: Drake SR6b 07 vs 06
There is usually a bit of tuning and / or revision goes on with the slalom fins from season to season, even layup changes within the same basic (outline) design.
In the case of Drake Pro (Deb) , it did change a bit from 2006 to 2007.
In the case of the SR6b, not much in that year.
Cheers ~ Ian