WTB: cheap old poleski or sitdown (asking on behalf)

Bit of a longshot but i have a friend whos after a ski, preferably an old sitdown (maybe early waverunner or kawi) or a poleski (maybe JS550 or 650sx?) pretty much any condition. He doesnt have alot of money to spend but has a very nice dh mountainbike he would trade if anyone has an old ski theyd like to get rid of.
Cheers

theres your ski on trademe mate:

http://www.trademe.co.nz/motors/boats-m ... 870480.htm

Missed that one in my searching, cheers for the link