Unattended generally means you not in the area to react to a developing problem, not asleep a few feet from it.
And I'll ask you to clarify / expand your earlier reply to me, it seems like it's missing the word 'not' in there. I'm not making any argument for or against a commercial or homebrew product, I'm saying both are susceptible to high winds, depending on conditions.
sustained high winds, I'm taking it down. Stormfront blowing in, I'm taking it down. Either expected with the coming day, during my planned sleep, it's coming down before I go to sleep. There is no single wind speed number. It depends on a lot of variables.