Be aware of the following activities
Full payment by cash for the purchase of an expensive boat or several small boats, personal watercraft, outboard engines, gasoline tanks
Individuals who opt to lease dock space under a short rate and paying by cash
Dockside activity at unusual times.
Loading of suspicious materials under the cover of darkness
Scuba trips at night
Use of binoculars or videotaping of maritime activity such as barges, etc.