Curling World Curling Tour to make the games only eight ends. Most tournaments on that tour are eight ends, as are the vast majority of recreational games. In international competition, each side is given 73 minutes to complete all of its throws. Each team is also allowed two minute-long timeouts per 10-end game. If extra ends are required, each team is allowed 10 minutes of playing time to complete its throws and one added 60-second timeout for each extra end. However, the "thinking time" system, in which the delivering team's game timer stops as soon as the shooter's rock crosses the
Arena curling is overcomable with some effort however, as evidenced by the fact that many curling clubs in Scotland (the home of curling) operate on arena ice. A second major challenge of arena curling is rock storage. Arena clubs must develop a system for storing the 42 lb rocks off ice, while scrupulously protecting the bottom running surface. In large arena clubs of 4 or more sheets, it can take considerable man-power to move rocks on and off the ice before and after each game. A related challenge of off-ice rock storage is rock temperature. To curl effectively, rocks must be maintained