WTB: THULE Snowboard rack attachment

[Prestovie]

Hey guys, winter is almost upon us and I'm going through a lot of preparations pretty far in advance haha. So last month I bought a car rack for my car(which looks great btw), but now I'm looking into getting a snowboard attachment for the actual rack, they're like $200+ on Thule's site, and I can't tell which ones fit my rack/which work best.
So I'm wondering if anybody has a snowboard attachment or know of one that is for sale?
Thanks!
27678