I already found the cause of spinouts. There was an oily spot on the bottom, 10cm behing the mast track. As i repaired my boards after the season I sanded the bottom with 400 grit.
A month ago I was on trip on Corsica (an island close to France) and i was few times on the S-Type with 8.5 and the spinouts are away...I could really see how good this board is.
PS: I am now buying the 115 as well for 7.0 or 7.5 days...and i am really looking forward to it.
Maybe a small question at the end...ist the futura a lot different to S-type, where is the difference most significant?
Thanks and have a good time.