Patent ID: 7607959

Claim:
A water craft system, comprising: a ski configured to float on water and comprising a housing configured to receive a user's foot; a propulsion device coupled to the ski and capable of floating on water, wherein the propulsion device is configured to grip the water and submerge a portion of the propulsion device in response to a force applied to the propulsion device in a direction approximately opposite a direction of motion of the water craft system and wherein the submerged portion of the propulsion device provides resistance for the user to propel the ski; a second ski configured to float on water and comprising a second housing configured to receive a user's foot; and a second propulsion device coupled to the second ski and capable of floating on water, wherein the second propulsion device is configured to grip the water and submerge a portion of the second propulsion device in response to a force applied to the second propulsion device in a direction approximately opposite a direction of motion of the water craft system and wherein the submerged portion of the second propulsion device provides resistance for the user to propel the second ski, wherein the ski further comprises a flat surface adjacent to the second ski, wherein the second ski further comprises a flat surface adjacent to the ski, wherein the flat surfaces enable the ski and the second ski to remain in close proximity during motion, wherein the ski further comprises a first semi-buoyant bumper coupled to the flat surface of the ski, wherein the second ski further comprises a second semi-buoyant bumper coupled to the flat surface of the second ski, and wherein the first semi-buoyant bumper and the second semi-buoyant bumper provide cushioning during motion of the ski and second ski.