A sportswriter in search of something to write about Sunday morning, this being the depths of winter, stopped off first at the Buckskill Winter Club where Joanne Doran, the manager and figure skating director, told him of a number of new offerings there, after which he swung by Sportime’s Arena in Amagansett for a talk with its manager, Mike Ritsi, Tyler Jarvis, and Bob Nicholson, whose 9-year-old son, Brett, plays on four traveling roller hockey teams, including a 17-and-under squad.