Against 1000 sharks?I don't think he'll make it through.They can hold a scroll but it was only holding it, Minato could FTG to it and grab it and FTG away.
The OP has already stated that touching Kisame is a bad idea.Plus he doesn't need the kunai to use FTG. He could put a seal on Kisame and then it is over for Kisame no matter what.