@cardibach I mean 9 or 10am is your personal arbitrary cut off. And 9am is only 30 minutes later than the time I’ve suggested as reasonable, so let’s say 8.30/9 and we’re actually pretty much in agreement.
The average office worker is probably already in the office by 8.30/9 so that’s already a lie-in of 1-2 hours on a Sunday and not inconsiderate to be out in the garden after that, including on trampoline.
Your message seems to say that there’s never an acceptable time to make a noise loud enough to wake a neighbour in your garden, which suggests you think no one should ever use their own trampoline in their own garden which is a fairly unreasonable take.
If I wanted to spend my entire weekend at the park playground or other public space I would have saved a lot of money by buying an apartment without an outdoor space.