I am finding that my wing mounted aerial is basically rubbish, its always got really bad signal, which is disappointing as my HU wasn't cheap to its ruining it a bit.
I had tried one of those electric aerials, which was really good as it was much longer. But unfortunately I was lazy and didn't fit the strap to the bottom of it and it leant on the wheel and got ripped off

Do the normal wing mounted ones earth them selves on the wing or do they not require earthing? As I could drill and run a wire to a proper earth to improve if they do.
Anyway what I wanted to know is how I can either improve the one I have or does anybody know of any good wing mounted aerials or internal ones?
On a side note, the roof mounted ones are not an option, I have a sunroof and don't really fancy fiddling about with the headlining to fit one AND I don't want to cut a hole in my roof

Thanks!