RedactedNarrative: On July 31, 2017 while camping with family members at St. Andrew's State Park in Panama City, Florida, three adult male family members departed the boat basin ramp for a day of fishing in St. Andrew's Bay and Gulf of Mexico.  Borrowing a relatives 16' open motorboat, the trio conducted some trolling techniques for mackerel and bonita.
  During the trip, they proceeded out into the Gulf and followed a tide / weedline searching for fish. As the trip progressed, they boated several fish. During one such hook up, while reducing trolling speed, they took a wave over the stern and swamped the aft cockpit. 
  The engine stalled, and in the rush to get the boat back in forward motion to drain water, they pitched the boat directly vertical. This action caused an overload and instability condition and the boat fully submerged. The three occupants grabbed PFD's and a handheld VHF radio prior to entering the water and watched the boat sink beneath them. They initiated a "mayday" distress call and the radio traffic was overheard by USCG sector Mobile, AL., and good samaritan vessel "North Star Express".  Responding  watercraft were diverted to assist in the rescue of the three men. USCG cutter "Kingfisher" as well as patrol boat 24513 along with SeaTow PC proceeded to the location. The three men were retrieved alive without incident. No injuries occurred, and the victims were taken back to their hailing port.