No need to put them all in the same orientation. You could put some vertical for Crappie cover, and some horizontal for catfish.
Push the horizontal tubes into the bank to close off one end. They won't snag because they're concrete and won't hold a hook, IMO.
Place the vertical tubes onto a solid plastic barrier (garbage can lid) to prevent them sinking into the bottom mud.
If there is any swimming in the pond, be sure they're out of the swimming lane, or put them deeper than 5' so swimmers don't kick them.
