Thanks for all your inspirations, I think that the challenge that I face here is that I'm in zone 10a and Bermuda doesn't really go dormant,, so even if we get a little cold period, the roots are still moving underground, then when it's warm again up it comes, so it's a consistent challenge. So that said I would hate to invest the time an resources into Hugle beds only to have then infiltrated with Bermuda, so I might re-double my efforts with the cardboard and mulch, then do some spraying with 20% vinegar and see if I can know it down.
thanks again, Jeffrey