I've already used a full race sail (Warp 5.0) on an old school Naish 8'5" wave board.
No joke, it works like a charm. It keeps your wave board well locked as the cambered sail tends to hammer the board down. As a result, jumping is NO charm. Manoeuvrability neither. But if you want to do straight slalom racks with lots of control in the chop, it's not that bad.
The old Naish has an extreme wave scoop / rocker line while the Kode hasn't, so it should go even better.
About the NCX I can't say anything, but a no-cam RAF slalom sail should work pretty well on a board like the Kode.
Wave handling will be poor of course, but that's a choice
IS87 / IS101 / RRD114 / US147
Last edited by BelSkorpio; 21st May 2013 at 07:59 PM.