i used a magnet mount, but a single magnet mount wont hold up with a 4 foot antenna, so i got the "triple five" it is three five inch magnets mounted on a 1/4 inch thick triangular aluminium plate, problem is, to get it off you have to unbolt eath magnet cause its too strong to pull off, works great, just have to remeber to take antenna off before you go into a garage or somthin. also, invest in the heavy duty springs, if you dont you WILL hit a tree limb or try to go into a garage and damage somethin and it sux havin to replace expensive stuff because you want to save a couple of bux (trust me i know). if you dont use heavy duty springs, when you drive down the highway, your antenna will be bent backwards and it kinda looks a little wack.