Thanks DJ !! Wow, S.I.C. have moved away from the bigger concaves and double concaves, with the 17 Bullet. Yes it seems to be a combo between the 17 Glide & F-16. (Which seems to be similar to my '17 Coaster' that I dreamt up during the last few weeks!)
There was a Glide 17 right there next to it.... would have loved to see more comparison camera angles !! Plus, the sound was better at the start with the hawaiian slack key music, then they moved into the wind crackle to get away from the music !
Edit;
The forward entry zone of a McTavish G2 Gun is probably were they are at.... see below... notice the side chines, and relatively heavy single concave. The side chines would allow the downwind board to self straighten when hit by some slight cross chop, without fear of catching a rail. Hence the F-17's description, about creating a board for less than perfect down wind conditions.
Below is a Pic of Lorne Pier (Vic) from Google Earth. Perfect launch site for a SW Downwinder, onto Fairhaven / Moggs Creek. Big fat wide beach to aim for. 10-12km downwinder, depending on where you land on the other end....