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Game wardens are on the lookout for intoxicated drivers who get behind the wheel while on the water.
Game wardens are increasing patrols on Texas waterways for the holiday weekend, looking for drunken boaters.
Authorities are implementing a "no-refusal" policy, requiring people to either agree to a Breathalyzer test or be arrested and take a judge-ordered blood test. Judges will be on site to approve blood draws.
Most boaters said they welcome the effort.
"I think it's a great idea," Britney Mueller said. "Everybody wants to have a great time for the Fourth. Increased patrols is a probably a good idea; everybody wants to be safe."
Twenty boaters have died in Texas this year, down from the 36 deaths at this time last year. A total of 61 boaters died on Texas waterways last year.