It amuses me the extent to which creationists seem to arbitrarily decide which "explanations" should be naturalistic, and which ones just flat out invoke miracles to fill explanatory gaps.
Why was it unreasonable for them to simply presume that god "miracled" all the animals all over the world? Why come up with the cockamamey rafting idea? God was obviously able to miracle a shitload of water into existence in order to flood the whole globe, and he handily miracled it all away when he decided the flood was over. He couldn't miracle all the marsupials to Australia? They all just happened to hop the same raft and end up in only one place on the entire planet?