a front side board slide is approached with the rail on the toe side, and upon engagement of the rail, the tail is on the same side from whence it came.
a back side board slide is approached with the rail on the heel side, and upon engagement of the rail, the tail is on the same side from whence it came.
a front side lip slide is approached with the rail on the toe side, and upon engagement of the rail, the tail is on the opposite side from whence it came.
a back side lip slide is approached with the rail on the heel side, and upon engagement of the rail, the tail is on the opposite side from whence it came.