Since his friend saw similar devices on a trail recently, it's better for him to have his design patent to protect his trailboard design. I also want to suggest that he should talk to patent attorney because the patent application process could be very complex for the first timer. It's will better off for him to get advices and guidance's from patent attorney then doing it by himself. For his Tailboard technique book, I don’t think the copyright would be necessary for him to protect from thief. If he somehow saves the publish date of his book in appropriate document, he should be fine because he could use that document as a prove of original ownership at court. I think it will be much cheaper than copyright and effective as same as
Since his friend saw similar devices on a trail recently, it's better for him to have his design patent to protect his trailboard design. I also want to suggest that he should talk to patent attorney because the patent application process could be very complex for the first timer. It's will better off for him to get advices and guidance's from patent attorney then doing it by himself. For his Tailboard technique book, I don’t think the copyright would be necessary for him to protect from thief. If he somehow saves the publish date of his book in appropriate document, he should be fine because he could use that document as a prove of original ownership at court. I think it will be much cheaper than copyright and effective as same as