Can/should I pollard a manchurian pear?

[Hodad]

Hey there, and greetings from Australia.

 

I have a client that has had me reduce her pear annually for the last 5 years. It is in a courtyard, with a canopy approximately 8/9m wide. It dominates the area and she's getting a little over it. It is probably around 18 years old.

It has been pollarded by another arborist years ago, but gently, within 3 feet of the canopy edge, and it's a bastard to reduce well as a result without revealing heaps of wood. It loses virtually no leaves in winter, just a smattering of autumn colour.

Anyhow, I've reduced a few of these over the years and they seem to callous well. Would I shag it if I made 6 inch pollards? Or should I just remove & replace?

She's sick of the size of it but has heaps of coin for maintenance. I've not seen these pollarded properly, only clumsily lopped but they seem to recover.

 

Thoughts?