The Australian won the event after moving up from the sixth-place tie he found himself in following the third round, which was played Sunday morning due to weather delays and was followed immediately by the final 18 holes.
Scott ended the tournament at 14-under 274, one stroke better than Sweden's Fredrik Jacobson, who fired a 70 in the final round to claim sole possession of the runner-up spot.
Jacobson had started the final round tied for second place after registering a 65 Sunday morning.
Ernie Els posted rounds of 69 and 68 to grab a share third place with Aaron Baddeley (67-68) and Jimmy Walker (70-69) at 12-under 276.
Swim Week Miami Beach 2014 [PHOTOS]