Even though there has never been a report of an orca attacking a human in the wild, you definitely should NOT try this at home.
David Bahnson built a wooden kayak and found that his dog could fit in the baggage compartment. He modified it so that it would be more comfortable for the dog and took her along with him. Bahnson is an avid kayaker so when the family got another dog he couldn't just leave her behind.
That's when he put an extra hole in the front of his kayak to make room for his second companion. It looks like the idea worked out perfectly!