A 19-year-old New Jersey knucklehead was charged with sneaking into a historic Westchester County amusement park on a stolen boat and trashing the place with his pals, police said Sunday.

Anthony Conkling of Wykoff, turned himself in to Westchester County cops on Saturday in the Sept. 23 raid on the ritzy waterfront park — with his two buddies now also identified and expected to surrender to police in the coming days, the department said on Facebook .

Conkling and his alleged cohorts landed a small boat on the beach outside the Rye park, which was famously featured in the Tom Hanks film “Big,” and climbed a fence to get inside while the county-owned site was closed for the night, police said.

Once inside, the three punks strolled around the park and even got into some of the rides,

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