Caravan aerial forward or rear facing

Margarita
Margarita Forum Participant Posts: 13
edited December 2013 in Caravans #1

It appears to be an age old question when I have asked around on site, but which way around should you stow the caravan triangular roof aerial. Poit forward or point rear. I was in the aerospace industry for all of my working life working for Airbus Industrie.
My professional head would say face the point rearwards to gain negative lift and positive down-force. However my caravan service manual states the opposite as do many other owners I have spoken to, who have many more caravanning years of experience to me.
So which way is it --- point forward or rearwards?