Does Solar Power have to be installed perm?

My Renology solar set up connects directly to the battery via alligator clips. It's simple.

Yes you can do portable. Most get bored with set-up and removal so they just mount them on the roof. Some do stick it out with portable to better capture the sun in certain conditions.

There are solar suitcases available that can connect directly to the battery. We have a Renogy 100 watt suitcase that I use in conjunction with my roof mounted solar and since it can be re-positioned throughout the day we can maximize it's output.

During the run of the renaissance faire I was at, one person had two roll-up solar panels, each being about 15 feet, and were staked into the ground. I would hazard a guess that this would give 200-300 watts, but because they were pointed vertically, a MPPT controller would be a must.

I would go for two panels on a portable frame, and a MPPT controller, just so you can get every single watt from them.

Don't forget to tether them down with something. Even a thin steel cable ensures they don't become someone else's "ground score".

Yes it is pretty easy,I have the Renogy Suitcase simple set up. Kit comes with Alligator clips for battery. The included carrying case makes it safe and easy to store in my cargo compartment.

I chose to make up a hardwired extension to the battery with a quick disconnect under the side of the RV.

I like shady spots if I can get them and this way I can put the panels where there is sun.

Is it possible to just pop them up and hook them to the battery when I want it and then store them away when I don't want them?

That's what I do. The controller is permanently mounted next to the batteries. I carry the solar panels in my van. When I need power, I prop them against the camper and use quick connects and "follow the sun".

Look up the Gone with the Wynns YouTube videos related to this subject. They had portable solar panels they would set up around their RV and connect to their power system just like you are thinking.