Yes, I did.
We put the side where you pound the spike inside. It seem appropriate.
I've had no issues with damage when weed eating. It makes weed eating a breeze, so much faster and cleaner.
Have had installed for three years, shows no sign of wear. Expect a ten year + life.
The Vigoro edging is only 3.25 high. They make another heavy duty product that is higher and might be better suited to a playground border.
Yes. I use a 22 point wood saw. They recommend using a hacksaw, but I tried and it took forever to cut.
You place the L shape edging with the holes on the inside of the garden. Stake it down and it keeps the mulch inside.