DaKine brand wave ski style foot straps found on the most recently made versions of the Cobra Strike. This should be compatible with a majority of wave skis.

Foot Strap is 19 inches long, 2 inches wide. Strap has screw holes on each end and center, thus forming two padded and adjustable arched foot straps.

You will re-use the original mounting plates and screws (maybe washers), or install with rivets and washers as needed.