mono ski !!
or a certain death ....
(^^depends on how you mount em..)
on a sidenote,
last year we had a new snowboard instructor join our crew, at the last day of the camp he loosened the bindings on two boards and twisted them into the sliding direction, then fastened again, he stepped into the bindings in the back, with one of his kids in the front bindings (like a tandem ski)
they rushed down the bunny slope and hit an old lady,
final tally: 2 twisted ankles, old lady had a broken leg and the instructor had a broken wrist....
doesn't need much explanation that we never saw him again ....