Instructor Laurie Sproul of Canton, demonstrates during a clinic for beginner whitewater slalom paddlers at Kenduskeag Stream in Bangor, ME on May 3, 2014. Carl D. Walsh/Staff Photographer

Instructor Laurie Sproul of Canton, leads a discussion during a clinic for beginner whitewater slalom paddlers at Kenduskeag Stream in Bangor, ME on May 3, 2014. Carl D. Walsh/Staff Photographer

Whitewater slalom clinic participants wait at the finish line as others right a canoe overturned in Kenduskeag Stream in Bangor, May 3, 2014. (Photo by Carl D. Walsh/Staff Photographer)

Duncan Howell, 12 of Blue Hill and instructor David Stearns paddle during a clinic for beginner whitewater slalom paddlers at Kenduskeag Stream in Bangor, ME on May 3, 2014. Carl D. Walsh/Staff Photographer

Renner of Hollis, NH negotiates the whitewater slalom course on May 3, 2014 in preparation for competition the following day at Kenduskeag Stream in Bangor. Carl D. Walsh/Staff Photographer

Nelson of Belmont, ME negotiates the whitewater slalom course at Kenduskeag Stream in Bangor, ME on May 3, 2014. Carl D. Walsh/Staff Photographer