I've got the s-type 115 (2005-2006-2007).
My set-up with the 2007 (I'm 190cm and +90kg)
overdrive 5.5 with select lightning evo 31cm or drake slalom pro 34cm
overdrive 6.5 with drake slalom pro 34cm
mega xr 7.4 with stockfin or drake slalom pro 40cm
I use the s-type for just blasting on flatwater/choppy lakes in the netherlands.