Law Enforcement monitoring huge flotilla of vessels on sandbar. Officers start to issue citations for illegal rafting where more than two (2) vessels are lashed together. Client engages with Patrol Boat Officers on three (3) separate occasions after he is cited to discuss and challenge the alleged rafting violation or ask for registration/license documents he feels officers kept. Only upon third encounter do officers note any signs of impairment. Client arrested after field sobriety testing on Marine Patrol vessel. Refuses post arrest breath test. Defense prepared to argue Patrol lacked grounds to detain client for BWI investigation. BWI charge dismissed prior to trial.