Thanks for the good info bro, i have a couple questions.
What kind of tubing is that and where is is readily available?
What size is it and how many can you stack before issues occur?
I like the idea.
These were made from flag pole only about £40 for 20 ft , it was just a idea I had I think if someone wanted to go into this and make a universal one out of carbon they would be on a right little earner 20ft Flagpole Aluminium Flag Pole With 2 Flags Union Jack & England | eBay