If you read Big Whoop: Unclaimed Bonanza or Myth?, you'll be given some info that'll get you started on the right track. Enter the cabin and ask about your choices for where to go.
Before looking for any map pieces, it's convenient for this walkthrough to get started with Phatt Island, so go there. After the ensuing scenes, pull the rock-hard mattress and use the stick underneath to extract a bone from the dead prisoner in the adjacent cell. Give the bone to Walt, use his small key to unlock your cell, and open the manila envelope on the shelf. You are now free to roam the island.
Rapp Scallion
Since the cook was killed on Scabb Island, his remains will be found in the cemetery. However, his coffin is in the locked crypt (one of the small buildings on the right). The key is found in Stan's Previously Owned Coffins on Booty Island, but you'll need some equipment before you can steal the key.
- Normal
- Enter the Booty Island antique shop, which is immediately at the island entrance. Purchase the well-polished old saw (in a barrel near the store entrance), and head to the Scabb Island laundry place. Use the saw on the sleeping pirate's peg leg, and go to the woodsmith's. Because the woodsmith is away for emergency services, you may steal his hammer and some nails (on the right of the cabin entrance).
- Lite
- Go to the Scabb Island woodsmith and pick up the hammer and some nails.
Go to Booty Island and enter Stan's store, which is to the right of the costume shop. Ask Stan for a good used coffin, and close the lid as soon as you have the opportunity. After receiving a complimentary clean, white hankie, use the hammer with the nails and steal the crypt key hanging on the large tombstone in the back, and use it to enter the Scabb Island crypt.
- Normal
- All the coffins are inscribed with quotations, so you'll need to find a book of quotations. Visit the Phatt Island library on the right side of the wharf area and use the card catalog near the entrance. You'll find the title "Famous Pirate Quotations" under Quotations, but it has been signed out by the governor. Memorize a random book other than "Disaster: Great Shipwrecks of Our Century" and "Recipes, Voodoo: The Joy of Hex" (you might as well borrow those two as well while you're here). Obtain a temporary library card from the librarian, sign out the book, and enter the mansion on the south side of the island. Talk to the guard blocking the stairs and find a reason to displace him from his post. Proceed upstairs and swap your random book with the one on the governor's belly.
- Return to the crypt, read Famous Pirate Quotations and memorize Rapp's line. Browse through the coffins until you find the one inscribed with Rapp's quotation, open it, take some of his ashes, and go to the swamp shack. Attempt to pick up Ash-2-life™, which is found in the jar in the middle of the bottom shelf. If you did not borrow "Recipes, Voodoo: The Joy of Hex" earlier from the library, do so now and bring it to the Voodoo Lady. Return to Rapp's coffin, use Ash-2-life™ to resurrect him, and agree to do a favor for him. Find the weenie hut (shack) on the beach and use the key to enter. Turn off the gas by turning one of the four knobs above the oven doors, and inform Rapp of your findings to obtain his map piece.
- Lite
- Browse through the coffins until you find the one with Rapp's name, open it, and pick up the map piece.
Young Lindy
The cabin boy apparently sold his map piece to the Booty Island antique shop.
- Normal
- Since you don't have 6,000,000 pieces of eight, you'll need to trade something in. If you keep talking to him, he'll tell you that he wants the figurehead of the Mad Monkey. Exit the shop and continue going right past Stan's store to find a spitting contest, so give it a shot.
- Go to the bar on Scabb Island and show the barkeeper your library card so that you can buy a Yellow Beard's Baby and a Blue Whale. Mix the yellow drink with the blue drink to make a green drink. Go to the antique shop and purchase the ship's horn on the wall near the parrot, and return to the spitting track and examine the flag markers. Blow the ship's horn and quickly pick up the flags to bring them closer to the fault line. Use the crazy straw with your drink, and spit when you see the lady's red scarf blowing in the wind. Show your hard-earned spit plaque to the antique dealer and convince him to buy it for 6000 pieces of eight.
- If you have not borrowed "Disaster: Great Shipwrecks of Our Century" from the Phatt Island library, do so now. Read the book and memorize (or write down) the coordinates found in the book. Talk to Captain Kate Capsize, the woman outside Stan's store, and charter a ship. Go to the coordinates, take a deep dive, take the monkey head off of the sunken galleon and pull the anchor on the left. Trade in your treasure for the map piece in the antique shop.
- Lite
- Buy the map piece sitting on the owner's desk.