Yes, I've read Fluckey's book and he did have decoys on board the last patrol - probably hydrogen-peroxide based noise makers, not sure. He also wrote of taking a five gallon bucket filled with oil/fuel and poking some holes in the top and spitting it out a tube. I remember reading at least once aircraft circling the position where he let loose this contraption as the Barb snuck away.
The ST scope-mounted radar is for range info only, not search. Too bad it is not in-game.
