A conventional/traditional clamping vise
typical clamps the ski or ski binding and is clamping to a bench or tuning stand.
For both skis (including fat) and snowboards something like a Board Gripper,
or Tuning Vise work well and can all be clamped to and moved along a bench or stand edge. The T4B vises were designed to integrate with the T4B Terminator Tuning stand and are connected wtih a knob and bolt for easy rotation and slides to quickly change positions.
The ski(s) or snowboard are secured using a lasso clamp:
The groove with an extruded aluminum T-track in a bench
or stand plays off this concept.