I would be installing threaded rod, straight thru with lock nuts and large washers on insides and outsides, 3 in series upwards. You can lock up the leaders and the rod serves as rigid brace ... tree will grow over rod and bolts, embedded, use stainless high grade and it would be set for many years. Go around 5/8" to 1" dia.
Higher in the canopy dynamic cabling.
I go with Sean on TLC for root zone, some mulch etc. Light careful reduction prune on vulnerable parts and solarguard paint exposed limbs to protect from sunburn. See a painter shop about a water based plastic paint with UV protection. |