Fright Wave (English, Paperback, Franklin W. Dixon)

Surf’s up in Hawaii, and the Hardy boys are riding a crime wave into danger! Somebody’s trying to deep-six champion surfer Jade Roberts, and Frank and Joe are determined to keep her from going under.
From Waikiki to Diamond Head, the Hardys find themselves in hot pursuit of a powerful crime boss. In the face of bullet-spraying motorboats and killer copters, they run the risk of suffering the worst wipeout of their lives!
Source- Goodreads.com
N24