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I use a c-stand without the legs attached on my cart and it also can be used as an emergency boom, but it's very heavy and putting a light on the end is gonna make it heavier obviously. You will need a strong assistant to hold it for any amount of time.
If you are using something like a Qflash, Lumedyne, Quadra, or hotshoe type flashes then this may work for you. The pole is very lightweight and easy to hold.
if it's windy I prefer to dedicate someone to the lightstand and keep it on the ground with the legs attached.
Took this today. It was kinda windy, but the heavy stands were fine. The big Octa was super stable, the little one would spin a little since it is on a short boom arm with a baby drop pin supporting it. The wind was 5-8mph and other than the Ranger hanging on the stand we didn't support them with sand bags. If it was a real shoot I'd have a few sandbags on each one but we were within a few feet of them and never had an issue.