Ice and snow surf-board

A sailboard for sailing on snow or ice with an articulated hand-held sail mounted on the sailboard wherein the sailboard has a topside and an underside, a bow, a platform and a stern;

• the improvements comprising:
• the portion of said underside underneath the bow extends forwardly and upwardly to permit the sailboard to ride up over surface irregularities, the portion of said underside underneath the stern extends rearwardly and upwardly to permit a sailor to press upon the topside of the stern to unweight the bow and platform while maneuvering the sailboard,
• said underside has two longitudinal runners separated by a channel extending at least partially the length of said runners, each of said runners located sufficiently laterally inward and downward from each most laterally outward part of the underside to permit the sailboard to be rolled on either of the said runners while maneuvering, said runners extending substantially the entire length of the underside underneath said platform,
• each most laterally outward part of the underside has a side edge to resist lateral slippage when the sailboard is rolled over onto said side edge, and
• each said runner being shaped to glide longitudinally and with low resistance to lateral slippage except that a part of each said runner underneath the platform has a sharp apex extending downward from said channel to resist lateral slippage.