Best way to get my new Yew hedge going?

I've just bought a number of Yew trees, all about 4" in height with a generous root ball encased in sacking and wire mesh.
Wonding if anyone has any recommendations about planting these? location is well drained and what looks like a nice quality soil.
- Should I use any particular compost (ericacous [spelling?] has been suggested)
- Should I use any feed?
- Should I remove the mesh before planting (It's been suggested not to, and let it rot)
- Should I adopt any particular pruning technique to get them forming a hedge as quickly as possible? They are already a reasonable size, but I don't know if there are any tricks to get them to shoot in the best way.
I'm planning on planting 2 per metre/3'4"
Any assistance gratefully received.

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