Would I do better with a 4 foot antenna mounted on the rear door hinge or a 2 foot roof rack mounted antenna? I have a 4 foot now that only sticks about a foot max past the RTT. My SWB is 1 to 1.3 depending on the channel. Thinking of switching the setup to get more antenna past the roof line of the RTT but I’m not sure if buying a shorter total length antenna would make for worse reception. Thanks.