got an aerial that is approximately 1m long; retapped the thread to suit the seat aerial holder and hey presto!! :D
 
Yeah don't be scared to pull extremely hard to get that aerial off. Felt like the whole roof was coming off when I struggled to remove mine!
 
I got one of those autoleads inline amplifier conections it really helps the reception well recomended dont get it from Halfrauds Ebay all the way baby just search for this VW SEAT SKODA AUDI Amplified DIN Aerial Adaptor PC5-90:funk: