Ground system for outside operation: Counterpoise?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Dave Hartwick by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ddhartwick-at-earthlink-dot-net>

I'm wondering how well a counterpoise type ground would work as the main RF
ground for outside coil operation? I'm thinking of something very similar to
counterpoise ground used for amateur radio vertical antenna installations.

Something like a counterpoise roughly 30' in dia with 30-50 radials buried
just beneath the sod?
The beauty of this for me is that I'm planning to install a ground plane
vertical antenna for HF Ham operation in the same spot I'm thinking would be
a good site for  outside coil operation. Thus, the counterpoise may serve
dual purposes.

I've got a hunch that such a large counterpoise ground may be superior to
multiple ground rods driven into the the ground for coil operation, though I
can't offer specific theory in the here and now. One notion I'm thinking is
that capacitive coupling to earth may be quite substantial.
Dave H
KA3STE