Among competitive stone-skippers, nothing makes ripples like a disagreement about regulation rocks.
The latest dispute in this sport for people who skim small stones across water is over imports used in competition.
At the Mackinac Island Stone Skipping & Gerplunking Club championships, some believe participants are supposed to source their equipment from the pebble-lined beaches of this Lake Huron island.
But there is growing concern that some competitors in America’s oldest stone-skipping competition this July 4 are bringing rocks from other places that offer an unfair advantage.
Enforcing a ban on imports “would really level the playing the field,” says John
“Skippy” Kolar, the 55-year-old chairman of the club, who calls himself a stone “purist.”