The last few years I have camped with my 3 dogs and I have found several things that work very well with multiple dogs. An exercise pen, actually I have 2 pens hooked together, that way the dogs have room and I’m not tripping over leashes, and a dog tent – they love the tent, which I keep inside the pen. Of course when we go to bed in the tent, they come inside with us. My husband ties the dog pen on top of the car so it doesn’t take up much space. See my blog about this at Dog tent.