Would this be possible?

[Clean Air Yurts]

I would propose another idea that could save weight, get you up off the ground and be easy to pack and assemble.

My idea is similar to yours to keep your train of thought without directing you on some other direction. Take a series of boards - this time use 3/4" thick hardwood or softwood about 3"-4" wide and the length of your platform (thickness can possibly be reduced, but a trial will be necessary). Square edged boards are fine for this, but you could still use angled boards or a cove and bead joint if you wish. On one side of the boards take webbing and stretch it across the width of your boards (perpendicular to the boards' direction) and nail or screw the webbing to the back of the boards. Use at least two screws per board for strength. You could also glue the webbing to the boards. I would place a piece of webbing every two feet, but that is just a guess.

The platform would roll up, but you would first have flip the platform over as it will only roll up in one direction. I would just elevate this platform on a set of boards that you place on the ground perpendicular to the direction that your platform boards or oriented. A solid deck of lumber should span 2' without issues, but if you are putting a heavy yurt with snow loads, then you may want more boards underneath. The boards on the ground are just to raise the platform up off the ground, and if you are only placing the yurt there for a short time, I would not even use pressure-treated lumber, just 2x4's nailed into a 4x4.