The Landing is a wonderful spot. Boats are there but the Treasure's not. Some Pirates might choose to wait. You're going the right way, you've done your best. Look to the bird and not the chest.
Pirate stay up all day and all night.
Though this Treasure is above the ground, Don't go near the Indian Mound. To find it you must turn to the East. My coin was found in a seating area directly behind City Hall on Highway 98. Remember you don't dig up any dirt. Good Pirates know not to kill And know not to go all the way to Beal.