Hey, can you exit the temporary rafts? or are they one use in that way? Like you have to crash it?
Viewing post in Mutiny Island 1.4.4 Released + Guides comments
They sink once your feet touch sand, or rocks that you can stand on in the water. They can occasionally sink when disembarking in the water but usually they will allow you to jump off, have a swim/collect some items and then jump back on. Just don't touch the land. Big Ships like the Frigate or Galleon can be used freely and will not sink on disembark. They can still get stuck on land though so make sure to make the Big Ships your home so that you respawn and can keep using it without buying a new one.