[Adept Havelock]

Perhaps you could make a banana sculpture in the shape of a female gorilla as bait? As for what constitutes an attractive gorilla, I suggest asking Ron Jeremy's lover. There may well be some common ground.

As for capturing one, I seem to recall reading somewhere that one of the problems conservationists in Africa were having with preserving the Gorilla population was their tendency to be caught in Antelope traps.

Good luck in your gorilla-capturing efforts.

Edit- After considering "Hummus" Jenkin's post below, you might also try a banana sculpture of Sigourney Weaver.