Summer may be winding down, but the fun was still afloat at the Ridley Park Swim Club in Delaware County, Pennsylvania, on Monday.

Dozens of kids turned homemade boats into pool-worthy vessels for the 12th Annual Cardboard Boat Regatta. It's a Labor Day tradition that's been growing year after year.

Hundreds of spectators packed the pool deck to cheer on the young sailors as they raced across the water. But staying afloat was half the battle.

"It was very simple," 11-year-old Dipper Spielberger, from Ridley Park, said. "It's easy to paddle, but when you get scared, it's very hard to control the boat."

Each boat was built entirely out of cardboard, held together with duct tape and decorated with waterproof paint.

"I think it's awesome," Lisa Sheridan, from Ridley Park, said. "My kids l

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