I don't have that headache, but on my enclosed trailer, there is a seam on the front that I can line up in my rearview to get within one inch everytime, and from hitching daily, I can tell how far away the trailer is. Another trick is to make sure you are perfectly lined up by making sure you can see the same image of your trailer in each side mirror. You can back up until you are fairly close, then get out and walk to your trailer coupling. Look from directly over the coupling at your ball and see if it is pointing at your coupling. If it's pointed to the side, correct as needed. Just take it easy and feel for the light bump. Once you feel that, you'll need to come forward about 1 to 2 inches to line the ball up with the coupling and you're all set to connect. I do this daily, and I started out taking about 5 attempts until I got lined up. Now, it's almost always lined up on the first shot. My coupler lock on the trailer helps get me out to check. It has survived many a bashing by a hopeful trailer owner (4 times in the last year and a half) and I will never leave it alone without it. Mine is a Masterlock the basically has a "ball" that fits into the coupling and a plate that fits over the front and acts as a clamp to keep it in there.
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03 3500 SRW 250 Horse 47re 4x4 QCSB
MBRP 4" turbo bak exhaust, Trac-Rac.
AMSoil, Amsoil oil, air filter