Perforated Raft

The Perforated Raft is a treasure in  located in the Sun-Speckled Terrace, Hero's Hideaway, and Plunder Palace. It is actually a wooden, similar to Fastening Item.

Sun-Speckled Terrace
Two Perforated Rafts are located in the westernmost section of the map, right next to the Dandori Day Care cave, inside of some breakable jars. Break them by having Oatchi charge into them, and the treasures will come out of them.

Hero's Hideaway
There are five Perforated Rafts inside of a set of jars on the southeasternmost corner of the kitchen countertop. To collect them, you must first break the jars with a rush from Oatchi; then, throw 1 Pikmin at each treasure.

Plunder Palace
There is a Perforated Raft hidden in a patch of grass near the center of sublevel 5 of the Plunder Palace. To collect it, you must throw 1 Pikmin at it. A nearby Giant Breadbug may attempt to steal it, in which case you will need to either damage it or best it in tug-of-war.