has anyone got any advice on antenna positioning for the half wave vertical dipole, is there any right or wrong way to mount ? As it is omnidirectional. I would like to see some radiation patterns of a badly mounted antenna but I cannot find any on google for the dipole. Thanks

Here's some info on dipole height:

http://www.hamuniverse.com/wb4yjtdipolepatterns.html
http://www.qsl.net/aa3rl/ant2.html