mate I think you'll find it hard to fish plastics in the surf. even with the heavier jigheads getting the cast out far enough will be hard? You might get lucky and get a nice close gutter with a bit of a westerly to help. If you really want to use plastics use something like the gulp worms and fish them like you would a true worm bait. I've used the bigger slick rigs trying to bounce through some close gutters for flathead with lmited success. I'm yet to meet anyone that successfully fishes plastics in the surf in the sense you would in the creeks/rivers.