The "No ground plane" antennas will give you less range then a standard antenna. Most antennas absolutely need to be grounded to get a low SWR. If your antenna is on the rear gate your really should run a 10 or 12 gauge grounding wire to the tub. I did a write up on how i did mine here-> Remove Sub Box to Ground and Run Antenna Coax - 2DR 2012
Running the antenna coax up the roll bar worked out really well.
NO DRILL CB RADIO FOOTMAN LOOP MOUNT
The L braces should be on the outside of the 3/8" clamp on this picture for a much tighter fit.
In this picture the plastic cover for the top of the windshield is removed. Normally you don't see the wires. The white wire going to the driver side is for the PA.
This mount will work with the new 2011/2012 hardtop that uses the footman loop. I copied this idea from someone who copied the idea. I got everything that I needed to do this mount for a Uniden 520 at Home Depot for about $10. This should work with almost any CB if it is not too deep. It works with the 2012 hardtop. It leaves the back of the radio about 2" to the windshield. I might have to get a right angle adapter for the antenna cable.
The insulated clamps
are in a box in the nuts and bolts row. 3/8"
is the size you want. It is best to put the L brase on the outside of the clamp instead of being sandwiched in there. It will give you a much tighter fit and won't scratch the paint.
The 1" corner brace
was in the row with hinges and gate locks. It is the perfect size. You can also put one or both of the L braces facing in to move the mount or get it to work better.
I had some 1/2" size 10 bolts
lying around so I used them. As a bonus they are brass so they will not rust. You need 4 of them and washers and nuts. They were the right size to fit very snug through the corner brace.
When I'm not using the CB radio I wrap the mic cord over the top of the radio and then when I clip in the mic it locks it in place. This is a different mount shown below, but you can see what I'm talking about. During daily driving the cord and radio do not block the view at all.
(picture taken from here->So where have you been mounting the CB's? - Page 12
HELPFUL LINKS FOR INSTALLING
This has been posted before but I would check it out first LINK--> Project-JK.com - Jeep JK Wrangler Resource » Affordable Jeep JK Wrangler CB Radio SolutionMidland Model-1001Z
This is a really good firestik write-up for tuning your antenna. You really cannot skip the antenna tuning, or risk damaging your CB when broadcasting -> Measuring SWR