I have this pole:
Amazon.com: RV Flag Pole Kit Motorhome Flag Kit by FlagPole Buddy 22 Feet: Automotive
There are lots of telescoping rv flag poles, with different ways of anchoring them.
Attached to that, I have the Wilson Dual Band Trucker mirror mount antenna with 3 way mount.
I haven't permanently attached my amplifier or run wire. The whole setup as is takes me about 5 minutes. Set up flag pole, run wire into window, plug in Amplifier, then attach indoor antenna. We have a small trailer, so sometimes it need to move the amplifier and indoor antenna around to get the best signal.
This is just for at the trailer, usually in town, I have no problem getting a signal.
I had thought about a small cradle amplifier, but the places I need boosting, I need a bigger boost. Just getting the antenna up higher, helped me a lot.