The Skier-Controlled Tow Boat from gadgeteers, Hammacher Schlemmer.

A six-button control panel on the tow rope handle sends signals to the boat, allowing skiers to start, accelerate, decelerate, turn, or stop the vessel with slight thumb movements. The nearly 8′-long boat has a three-cylinder, two-stroke 70 horsepower engine with jet pump and axial flow propulsion, generating speeds up to 40mph.

The price: a mere $17,000. Buy one. Deserve to ski alone.