I understand that strictly speaking a G5RV isn't a multi-band antenna,
but my primary use of it is on 20 meters where it works pretty well as
a 3/2 half-wavelength doublet. It's up about 55 feet now as a flat-top
and I've been working plenty of DX with only about 300-400 watts out.

Never satisfied, and always wanting improvement (it's a compulsion!),
I'm wondering whether a half-square like the Windom HSQ listed here
would be an improvement on 20 meters:
http://www.antennasmore.com/windomhq.htm

I've read that at 20 meters and above, there is more benefit to being
horizontally-polarized at a decent height, so maybe I'm better off with
the G5RV?

Thanks for any thoughts.

Chuck
KB5GC