I don't have any idea about Grenada or snagging legality. But I used to see it done a lot below the Barnett spillway in late March and early April when we had a lot of rain in the Pearl basin. Quite a few people just stood on the bank and made casts with multiple jig rigs. They just appeared to cast, let it sink and jerk, jerk and jerk some more. I prefer to feel that familiar "tick" and catch em in the mouth.