Drying Cherry Orchards is a hazardous undertaking no matter how careful you are.
The wires are small and very hard to see even if you know they are there.
Depending upon the size of the Helicopter and its downwash it can require a fairly low hover.
The trick is to shake the tree limbs enough to remove the water that collects at the point where the stem enters the Cherry...but not shake the berries off the tree or break the limbs.
Rarely does a season pass by that someone does not have an encounter with wires that results in an accident.