A jet-powered sled has a body having a control cockpit with control apparatus for an operator to control the jet sled, a set of surface runners adapted to engage a surface upon which the sled is operated, the surface runners removably engaged to spindles coupled to swing arms coupled to the jet sled, and an engine compartment having a jet engine removably mounted in a manner to direct thrust to a rear of the jet sled to propel the jet sled. The jet sled is characterized in that the sled may be adapted specifically to run on water, ice, or snow by installing runners adapted for water, ice, or snow on the spindles of the swing arms.

A ski-attachable upright conveyance can have a swept-back handle, an upright frame, strengthening members, ski clamp attachments, a braking system, and a plurality of standing plates. The ski clamp attachments allow simple attachment to a variety of skis (skates, wheels, etc.) to form the base of the conveyance so that it can slide across snow, ice, etc. The standing plates provide a non-slip surface upon which a user places his/her feet, allowing the person to stand upright while operating the conveyance. A braking system can allow a user to safely control their speed, stop, etc. The upright frame sweeps upwards before joining the swept-back handle. The frame locks the ski clamp attachments together and provides rigidity. Additional rigidity and support can be added via strengthening support members. A user can vary the pressure and forces exerted on the swept-back handle to assist in steering.

A ski-attachable upright conveyance can have a swept-back handle, an upright frame, strengthening members, ski clamp attachments, a braking system, and a plurality of standing plates. The ski clamp attachments allow simple attachment to a variety of skis (skates, wheels, etc.) to form the base of the conveyance so that it can slide across snow, ice, etc. The standing plates provide a non-slip surface upon which a user places his/her feet, allowing the person to stand upright while operating the conveyance. A braking system can allow a user to safely control their speed, stop, etc. The upright frame sweeps upwards before joining the swept-back handle. The frame locks the ski clamp attachments together and provides rigidity. Additional rigidity and support can be added via strengthening support members. A user can vary the pressure and forces exerted on the swept-back handle to assist in steering.

A ski-attachable upright conveyance can have a swept-back handle, an upright frame, strengthening members, ski clamp attachments, a braking system, and a plurality of standing plates. The ski clamp attachments allow simple attachment to a variety of skis (skates, wheels, etc.) to form the base of the conveyance so that it can slide across snow, ice, etc. The standing plates provide a non-slip surface upon which a user places his/her feet, allowing the person to stand upright while operating the conveyance. A braking system can allow a user to safely control their speed, stop, etc. The upright frame sweeps upwards before joining the swept-back handle. The frame locks the ski clamp attachments together and provides rigidity. Additional rigidity and support can be added via strengthening support members. A user can vary the pressure and forces exerted on the swept-back handle to assist in steering.

A ski-attachable upright conveyance can have a swept-back handle, an upright frame, strengthening members, ski clamp attachments, a braking system, and a plurality of standing plates. The ski clamp attachments allow simple attachment to a variety of skis (skates, wheels, etc.) to form the base of the conveyance so that it can slide across snow, ice, etc. The standing plates provide a non-slip surface upon which a user places his/her feet, allowing the person to stand upright while operating the conveyance. A braking system can allow a user to safely control their speed, stop, etc. The upright frame sweeps upwards before joining the swept-back handle. The frame locks the ski clamp attachments together and provides rigidity. Additional rigidity and support can be added via strengthening support members. A user can vary the pressure and forces exerted on the swept-back handle to assist in steering.