HillBelly
Section Hiker
You'll get away with standard 8.5mm alloy poling , but it might get a bit flexy and interesting if you are caught out with strong winds. Another option is make some out of carbon fibre golf club shafts which can sometimes be picked up cheap on ebay. It requires some diy skills with a hacksaw and two-pack epoxy.
I'm going to experiment with £10's worth of fibreglass poles 9.5mm and weight for 2 lengths totals less than 400g, so less than a couple of walking poles. The sections of these are 50cm so handy for bike packing. I might end up with some nice aluminium ones if I can find the weights of the AliExpress sort. I saw some which had smaller sections at 32cm, so that could work too.
Thinking ahead. If it works the apex poles will make adding a 'door' much simpler - with a triangular piece of fabric being able to tie into the poles simply.