I have a low power FM transmitter that I use for in my house and yard.
I want to put a 1/4 wave vertical on the roof of my home. The 1/4 wave
vertical will be made as many have seen from a UHF panel mount connector
with the vertical on the center pin and the four radials soldered to the
holes for the screws.
Like this,
https://encrypted-tbn1.gstatic.com/i...M00RrltFyCH-LA
Only bigger :-)

Looking at the pattern of a 1/4 wave vertical, I think I could best
cover my yard with the pattern upside down.

Can I mount the antenna upside down?

Is this feasible?

If I did turn it upside down, what would the feedline do to the pattern?

Is there a better physical layout to avoid pattern distortion caused
by the feedline?

Mikek