I thought it was time to share my solar setup on our 2014 365saq. I wanted to use it all last year to make sure there was no kinks. Everything is working flawlessly. System consists on 2 145 watt panels, 3000 watt inverter/charger, and I went with 4 12v AGM 120 AH batteries. Here are some pictures. Everything is hidden in the wasted space behind the basement wall.
Here I added an extra breaker box, I took the second ac out of the original box and moved it here.
Here you can see the 4 AGM discover batteries and the xantrex 3000 watt inverter/charger in the back corner.
Here is my regulator and my complete system disconnect I added in. The disconnect cuts power to the whole trailer but still allows for solar charging, worked great for winter storage, kept my batteries topped up all winter.
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My plan is to now add 1 maybe 2 more panels on the roof and 2 or 3 more batteries to the space behind the basement wall. On this system so far we have boondocked for over a week with no issues, we didn't go heavy on power useage but didn't really skimp either.