Teams design, build and race cardboard boats around a marked course at Lake Hollingsworth, with food vendors and lake education booths. Hosted by Lakes Education Action Drive with the City of Lakeland to raise awareness of Polk County lake water quality. On site registration runs 8 to 8:30 a.m., boat construction 8:30 to 10 a.m. and races begin at 10 a.m. Original event page: https://lakeseducation.org/lakeland-cardboard-boat-challenge-lakes-festival/