I further modified the tilting system for my 2 160 watt panels so they can be tilted 3 directions, giving me more choices in the direction I park the trailer. No tracking system! Photos at my
21 Trailer Modifications page.
I still carry a 160 watt portable panel, but it is buried in the front of the truck & I hope to never need to dig it out. As to why all the solar, I use between 40 - 50 amp hours per day, and spend the winter in Quartzsite, dry camping for as long as 91 days. No 65" Flat Screen TV (in fact, no TV) but I do enjoy a real toaster, using the microwave, and a pot of drip coffee each day. Lots of camera & phone battery charging, a couple of cell phone amplifiers, etc. I pretty much live in the trailer 8 - 9 months of the year so creature comforts are important!