The cargo areas are pretty neat places to mount alot of these type of electronics...

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I am still in the planning stages here for my solar panel install but I will most definitely want to have a panel setup that I can observe from the living area of the trailer.
I would want to keep track of the good and bad times for the solar panels in a effort to perhaps keep the panels better in the high sun portions of the day...
My goal is for around 400Watts of solar panels and I want to see a good 20AMPS of DC CURRENT being developed during the high sun portion of the day...
With just your smaller portable panel this may not be a concern for you but little things that do good seems to always get bigger and bigger for me once I see the big advantages I gain from them... i.e. plan for future growth perhaps...
Roy Ken