Oliver Quayle, aged 17, of Victoria Road, Castletown, will face a trial in summary court on September 4.
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He has previously pleaded not guilty to driving under the influence of cannabis.
He also denies possessing 2.2 grams of the class B drug, valued by police at £44.
The offences are alleged to have been committed on November 26 at Clypse Reservoir.
He was represented in court by advocate Jim Travers.
Bail continues in the sum of £500.