2oldman, no, they don't tilt.  Hence why I only got 1014 watts from 1600 watts of panels, then there is also shading from the A/C units, etc.  About a month ago, I saw a motorhome with the panels mounted over an A/C unit - nice way to avoid shading.
Itinerant, we also do LP water heater when boondocking. Our killer is the fridge.  At night, with a couple LED lights on, TV, & fridge, the draw is 18-20 amps.  That puts us in the 460-480 ah neighborhood for 24 hours.  Add in a little more for microwave, furnace blower this time of year.......
Since we would lose around 100ah per day, I guess we could go 8 or 9 days before the need of a generator.  I unplugged again today and drew the batteries down to 83% SOC with fireplace, AC water heater and microwave.  We are currently at 90% SOC with 69 amps from panels and 53 amp going into batteries.  At 1:35 PM local time, the max solar was 1159 watts.  3.13 kwh so far.