I use two 100W panels that are portable. The benefits of flat are mentioned above. But arguments against it are:
- I remove my batteries while in storage, so continuous charging is not an issue.
- I already have power going to the unit while under-way from the alternator.
- They mention theft. They can be stolen from the roof while in storage. I can lock mine up or take them home. And, I always attach a chain and padlock when they are being used.
- Some of the folks like the convenience of not having to set them up each time you camp. I'd have to agree with this one. It takes me about 4-5 minutes to get the panels out, position them, plug them in and lock them up.
I really prefer to set up camp with some tree shade most of the day so that the FW stays cooler. Having a portable array allows me to move the panels when needed to take advantage of the sun. My connecting cables are 40 feet.
Jim