In my local area here all cb beam owners have them
mounted Verticle. Except 1 guy who has a PDL-2.
Jo-Gunn 5 conventional, Jo-Gunn 4 Conventional.
We are all about 3 miles apart.
I out-talk them all in DX with my I-10K almost everytime.
The guy with the PDL-2 runs his on the verticle side.
He's to lazy to switch to the Horz. side while talking
DX, so, i can't comment on how well it does on Horz.
Now, local talking is a different story. Verticle Beams
are better.
So, you probably want to construct or buy something
with both Horz and Verticle.