I have to agree about the use of a balanced matching system. I used a beta,or hairpin, match with a 4:1 coaxial balun at the feedpoint.
4:1 coax balun design.
The F/B ratio is incredible on my antenna. On
FM I can take a 20/9 signal and drop it to less than S-1. Not sure how many dB's that is because of the lack of ALC on
FM mode but it's still pretty impressive. On
SSB I can completely null out any signal that is S-9 or weaker.