Rockskipping

Rockskipping, or skipping stones, is a recreational activity and informal sport in which a flat stone is thrown across water to bounce or skip multiple times before sinking. The aim is to maximize the number of successful bounces while keeping the stone from digging into the surface.

Stone selection and preparation are important. A flat, smooth, well-balanced rock, roughly palm-sized, is preferred. Stones should have a flat face and be free of sharp edges. A stone that is easy to grip and rotate smoothly on release tends to perform best.

Throw technique is a key factor. The rock is held with a grip that keeps the flat face nearly horizontal. The throw uses a quick wrist flick to impart spin while delivering a low, forward path at a shallow angle to the water, typically around 20 to 30 degrees. A fast projection and sufficient spin help the stone skimming rather than plowing into the surface. The release should be smooth and consistent.

Physics and performance play a role in outcomes. Skips arise from the hydrodynamic lift generated during each contact with the water; the spin provides gyroscopic stability to maintain orientation. With each impact, energy is lost, limiting the total number of skips. Calm, smooth water and clean, flat stones generally produce more skips.

History and usage vary by region. Rockskipping has historical roots as a simple pastime in many cultures and is enjoyed informally in most places. In some areas, there are organized competitions with rules on stone type, number of skips, and scoring, though practices differ between groups. Practice in open areas away from people and boats is advised.