LAKE PLACID Anne Brewer has been paddling for most of her life. The Lake Placid resident has competed in the 90-Miler, a three-day race from Saranac Lake to Old Forge, at least six times. She’s also participated in the Long Lake Regatta a few times. She works as a guide for an all-woman company, Adventures in Good Company. So it’s only natural that three years ago, Brewer, 50, would join the board of an organization dedicated to promoting and maintaining the Northern Forest Canoe Trail, a 740-mile water trail that runs from Old Forge to Fort Kent, Maine. It’s a trail that Brewer knows well.