Hi Naysen,
I see your problem..... The only thing I can think of off hand for now would be to connect the poles at the top to create some stable geometry or something like a pergola effect. At 10' tall - don't know if guy wires to your eaves and/or fences would work. Anyway, I'm sure you'll come up something workable!
Oh, I am not a real mechanical engineer, although I do watch NOVA whenever possible LOL! I should probably provide a caveat emptor with my posts saying follow my suggestions at your own risk
! FWIW, I was a pastry chef/baker (and other types of restaurant cooking) and, later in life, an architectural modelbuilder specializing in land use planning (models of golf coursess, resorts, developments, etc.). Basically, I just like to experiment and make things!
Have been busy taking pics of the garden and will post them to the "Anne's Garden" thread pretty soon.
Good luck with your various challenges!
Anne