If you buy stakes taller than 6', who pounds them into the ground?
I'm 5'3" and shrinking.

If you buy "rebar," metal rods about 3/8" in diameter made to
reinforce concrete, you can push them into the earth very easily.

And they will last almost forever.

You can get them at building supply centers. Get 20 foot pieces and
cut them (or have tghem cut) into thirds, or buy pieces about seven
feet long.

vince norris