Total posts : 45366
My radials don’t hang over the side of the roof. They extend straight out from the base, equally spaced around the base.
I don’t have a separate earth ground on the system. Rather, the ATU grounds through an inline coax protector near the entrance to the house.
The coax couples to the tuner through a toroid transformer which I think isolates the coax sheild from the ATU common ground. If that is so, the radials are not tied to earth ground through the coax sheild.