Last night I saw a gentleman shooting a football game with a monopod. He had one camera with a large lens mounted on the top of the monopod and then he had a second camera with a smaller lens attached to the monopod (below the head) with some kind of a clamp/bracket. The second camera was off to the side. I should have taken a photo of him but didn't. Anyone have any idea what kind of clamp/bracket I would use to attach to the body of the monopod to mount the second camera off to the side? Thanks for your help!