Scout the beach at low tide looking for the sand bars that are often parallel the beach, then look for the end or better yet a break in the bar - its is near the break or channel that you’ll find the reds hanging out waiting for the bait fish to go through that cut or slew. Live finger mullet are a great bait, you can catch your own with a cast net back in the sound.
Another good spots is around the shoals at the end of the island - just be careful not to wade out intot he current - it can be VERY strong.
Let us know how you do.