Most all of mine are driftmaster or look-a-likes I made. I have one clamp on like you are talking and I dont use it, cant get it to fasten good.
ACarbone624, post a pic. Do you fish with yours or are they for storage? Can you change the angle? Ive seen some made with a cross section of a 3" or so size pipe, cut open like a c shape, holle on one side and u shape notce to rest the other end.