A few years ago, with the introduction of EZNEC+ and its great capability to model complex wire situations, I performed a lot of simulations to examine all my existing Rx antennas (season 2004) and the interactions among them and the elevated radials of the Tx antenna.

I wrote the above linked PDF file, whose 26 pages are probably not easy to follow and most of them, after the basic ones, could be skipped until the final summary.