TALKING ABOUTJulie Berke of the state Division of Recreation and Parks puts up a sign marking the new canoe trail at Weedon Island State Preserve in St. Petersburg. The trail will open Saturday. Started five years ago, the 4-mile trail was completed this year with the help of volunteers. A ribbon-cutting ceremony will be at 10 a.m. at the end of Weedon Drive, near the start of the trail. Guides will lead tours through the trail. Paddlers must bring their own canoes.