I think I debated on that one, but I was also sleepy. :)

So sleepy that I was positive it said "sandboarding", not sandboard, in katakana.

(I'm still going with 'attachment', though, because I'm not entirely sure what Suzaku's referring to, but I'm positive it wouldn't be an actual surfboard-ish thing. It must be some sort of attachment for the KMF to mitigate the sand.)