Steve wrote:
I want to put an antenna on a -fiberglass- motor home
(class A) and I'm not sure about the no ground plane vs
the regular mobile antenna choices.

I have a ladder rack on the back, and a luggage rack on
top, but I'm not sure of how much ground I can get from
that.

I have a 102" whip laying around and I thought about
mounting that to the back bumber with a homemade plastic
'standoff' at the top of the motor home to keep it from
swinging.

Good idea, or no? (tree pruner is not what i want) but
from the bumper I can use most of that 9' before it
clears the roof on a fiberglass body.

The whip will give you excellent reception. I'd go with
what you're proposing.

Strange combo.

Hey, it's a motor home, not a sports car. Besides,
strange is in the eye of the beholder, and everyone
knows you're not strange (not even by a long shot).

BTW, where you going with it? (Hopefully not Mexico.)