If you want to run multiple dead stick rods at once, you will need to spread them out enough, so they do not get tangled with each other. This will also allow you to cover more of an area and increase your chances of a bite. Again, having multiple dead sticks setup will only increase your chances of catching more fish, and there is no harm in doing so as long as you are strategic about it. You will also need to be mindful of the people around you.