[Elecraft] Off-Topic: Your advice/suggestion about antenna

[bw_dw at fastmail.fm]

>From what I understand - solid rock below a raised vertical is not the best option for performance.
With an underlying geography of many feet of solid metamorphic rock - that would probably rule out the low angle benefits of vertical antennas.  

Consequently, over the years, every 40m vertical I've ever put up has been out-performed by a dipole at .41 wavelength.  I've also tried the DX-Half Square and vertical Delta Loop with the same results.

It looks to me like my only option to outperform a 40m dipole - is a tower and (at minimum) a 2EL yagi.

Would that assumption be correct?
Thanks
Duane