There's no amount of ducks anywhere worth getting shot by the cartel. I know some guys that used to fish it. Having heard their stories I will pass.
Falcon has changed A LOT in the 5-6 years. The presence of coast guard and border patrol on the water is constant.
I completely believe that the US side of Falcon is very safe.
I know there are guys that would say "In not going to take any chances". I promise your drive down there would be more dangerous than your time on the water.