EDINBURG — Friday evening presented a refreshing breeze and cloudy skies — the perfect weather for sailing.

At least nearly 100 people gathered at the Edinburg Municipal Waterpark to witness the 4th annual cardboard boat regatta thought so.

Though boats are typically made with sturdier materials than cardboard, duct tape and latex paint, the participants of made do with that they had. Dozens of teams stood proudly by their cardboard rafts, ready to race through the swimming pool.

The competition was divided into three age groups: children 6 to 12 years old, teens 13 to 17 years and adults 18 years and over.

“What they (the children) learn is teamwork and basic engineering principles, but mostly it’s just to come out and have fun,” said Martin Martinez, recreation supervisor with the City of Edinburg.

Martinez said the event has grown since it first started. Those participating usually include schools and other local entities such as the Edinburg Police Department, Edinburg Fire Department, and Boys & Girls Club.

“Some people get very competitive,” Martinez said, adding that the adults are often the most enthusiastic.

However, Isabel Martinez, a music teacher at Canterbury elementary, has a more laid back approach. Her and her partner worked until the last minute to seal the edges of their boat so water wouldn’t seap in, but were prepared to accept defeat.

“I just hope we don’t flip over,” she said.

The school had five students participating, who ended up winning first and third place in their division. Although, Martinez’s team of adults wasn’t so lucky. On the way to the finish line their raft sank in the middle of the pool.

“We went down like champs,” she said.