An alternative to the 6M7JHV antenna for 6m / 50MHz
This is GB3RAL on 50.050MHz sitting at around s8 at G3WOS's QTH. The stack is pointing straight at them 310 degrees.
I then turned the stack a full 180 degrees to 130 degrees and the beacon disappears into the noise. You can see that this direction is much noisier but a front to back ratio of at least 30dB can be seen - exactly as predicted in the design.