Bracing old verses new

[Treemover]

I have a client that has numerous specimen trees. They have been advised to remove old bracing which to me appears in good nick; and replaced with Cobras.

 

I can't post pics (need to master that) but the old bracing consists of a fancy steel system bolted through the stem with large plates.

The old system has occluded so I'm reluctant to mess with that, but rather than throw out a system that looks fine to me, is the cobra that much better?

 

I'll what I'm asked, but would like to know more about the merits as I'm worried how good the cobra system is?

 

Cheers

[madbopper]

Leave them alone if the old system is working then that's all good. I think we're all getting a bit girly regarding drilling into a stem I have seen loads of old bracing with no ill effects on the trees health. But I have seen plenty of poorly installed cobra