rafting is said to happen a lot. actually YEC should be opposed to biogeographic results based on this. i am. this because of limited timeperiods on earth.
Further are examples like close islands that never get rafters. madasgasger is the great example. its close to africa, for YEC its been 4500 years but for others millions of years but they have a trivial unique fauna. nobody much got their after it was separated from africa.
everybody tries to say primates went from Africa to s america, even saying when the continents were closer.
yet YEC should say they just walked over from asia with heaps of creatures, including those to become/already marsupials during post flood warm times and lower sea levels.
Rafting is not needed. just lower sea levels and quick migration of creatures under command of god to fill and multiply. in fact this speed is, i speculate, the origin of marsupialism of otherwise ordinary creatures.