heres what you do. go buy one of those shitty snowboards, trace the general shape of your ski on um and cut um out. then mount them up with bindings. but seriously, those plastic boards would break in half on a rail. the street dweller is a REAL board, it just lacks edges and 8 inserts (only has one stance)The best bet is to go on ebay, and buy some old 1080s or 1260s, and detune the shit out of the edges, and walla! your own beater skis.
Lets go skiing