SteveF wrote:

Another option is to use mobile home anchors that you can buy
from a mobile home supply store, I think there is one in Garner.

I know there used to be one on 70 near Garner, a dozen years
ago. But there also was one in Raleigh on Tryon Rd., right
next to the municipal golfcourse. That also may have morphed
into some other retail line...