Swedish Aspen limb tie up?

[canadianclimber]

Just looking to see what other use to tie up Swedish aspens or similar trees. I tyically use hemp string/twine as it's hidden and will eventually break and not girdle the tree if forgotten about. Typically by then the limb is now growing in the right direction. I find the arbor tie (green/brown webbing) bulky and overkill. Clients are asking for less obtrusive options as well.

As well I try to intertwine the branches back up.

FYI I really hate trying to maintain theses trees.