We use the same approach whether biking, mountaineering or backpacking. The tent and rainfly go into a compression sack. While the picture below is our three season tent used for bike trips. The same approach is used on our four season tent--just a little bigger compression sack. It does not make them any lighter, but it sure reduces bulk.



The green compression sack is the sleeping bag, the blue is tent and rainfly, the orange is the Thermarest. All fit easily into an Ortlieb medium Rack Pack with room for stuffable pillow, sil-nylon ground cloth/tarp, and my running shoes. The water bottle is for scale. It all goes on the rack.

The same tent used for mild weather ski mountaineering. It is a good tent, but it would not be "Patagonia proof". Sometimes you just need the right tool for the job!