http://www.pa3fwm.nl/technotes/tn07.html

This suggests that the ground reference should be at the
site of the mini whip, which goes against other web sites
calling for a non-conductive mast.

(The electric filed diagrams seem more technical than other
URLs)

Has anyone any experience either way?

73 de Gareth G4SDW

PS. Have gone for the "vapourware" IP33 SMD kit and a drum of
RG58.