Originally Posted by jhardie
I've only tilted the panels once and it was a time when I was near a ladder as I don't really want to carry one. I have been ok with leaving them flat and the output has been near max for the 4 panels.
To me it boils down to the time of year you camp. My two flat mounted roof top panels (a 95 & a 100 watt) provide all I need & more after April through the Summer & early Fall, but during November - February I need to add a portable 160 watt panel that I can aim due to the low angle sun & shorter daylight hours. In December, the output of both rooftop panels together was a maximum of 5 amps. They do double that in June.
Another variable is how far North you go. Even in June & July, in Alaska the additional portable panel was helpful.