For the first one, go to the right. In the cove, there should be a brick. Next, go down into a large "C". Near a treasure chest, there should be a brick. Another brick should be behind the ship. The fourth brick is near a jelly fish. The last brick is near a giant crab. The crab is under the jelly fish. Note: You cannot carry more than one brick. You will drop your brick if touched by a jellyfish, cannonball, chain, shark, or sting ray.
Go left from your house to reach the intersection. Next, go down across the road and keep going in that direction. At the corner, go right. Keep going until the Brickster gives you a skateboard.
Go to Darren's house and find the Hospital page in the backyard. Go to the Hospital's mailbox. A patient will give you a ticket to Castle Island. Go to the Ferry Pier to go to Castle Island.