Topband: Vertical Array Over Uneven Ground

[Ken Claerbout]

Has anyone modeled or have experience with a transmit vertical array, say a 4-square, over uneven ground? By uneven I mean a variance of up to 2 - 3 meters over the footprint of the array elements. I have plenty of room at this QTH but the terrain is fairly uneven. I've done some modeling but would like to see if my findings compare with others that may have done the same. Modeling was done with radials on the ground, not elevated.

Thanks
Ken K4ZW