I would be able to provide a first hand answer sametime next month after 8Q7 operation.
I have the Butternut HF6V-x with 12/17m coils all tuned up and marked. I ran 6 radials here in my backyard @ NC
to get an idea. I know the soil conductivity is going to be different, but the plan is to place it near the saltwater
line in both high and lowtide (3ft or so is the variance), meaning it is going to stand in water at times on a
6ft tubing that is driven down into the soil atleast 2plus feet. No breakers at the 8Q7 spot, since the reef extends
further out and appears to be a lagoon.
As the vertical is moved inland over a 1/4 wave, the signal strength starts to drop and at a 1/4wave point inland, it
again peaks up, but by not as much as when it is right near the water line. Then again, as you continue moving
inland, it drops even further. Hence the kicker is to keep it near the waterline at all times if possible. This is my
understanding based on reading some material about the best location to place a vertical.
Since many do not want to worry about the shifting waterline and tide pattern, the vertical dipole is used. Also the
vertical dipole is much better suited for a phased setup.
We are using #14 wire and durability past the operation is not a concern