Sometimes something really different pops up in the Buy & Sell...
Get in quick!
Are they cup hook holders to thread the "bindings" through?
Out of control kiters were already a phenomenom...
www.seabreeze.com.au/Classifieds/Kitesurfing/Accessories/~btvhm/1993-Stans-Sand-Skis.aspx
What they weren't going strapless on the sand in '93? They probably didn't unhook either.
They don't look like they have been used much. Should say 'Only used once. Owner selling after a case of date sand burn.'