You need to be diligent and patient it seems to catch a gator. For two weeks Billy monitored the spot where the gatore was spotted ultimately got his prey. Parry has been a trapping these animals for three years using just a fishing rod, treble hook and weights. . There is a standard by which Billy and the nuisance alligator effort uses: If they’re less than four feet long, the gators are caught and released into a “less populated” area.