Sorry for the stupid question, but why are the notches necessary? I have seen mass produced ones at tackles shops that don’t have that. I enjoyed the video!
Great question! I think it's based on one's preference. I have seen what you are describing, and I honestly like this design better due to the fact that the rod will sit only in the direction you place these rod holders. Also, if these were shorter in length and attached to a boat, it would be beneficial so that they wouldn't swing around hitting other rods and nearby objects durring transporting.