Guys,

A little different idea.
Carry a square tarp type ground sheet a little bigger than your tent. In a jam it makes a pannier top(lost at speed), or a sun shade in the desert(strung over the bike), and a shade for mechanic's work anytime.

Can be folded to any size under the tent, takes no time at all.

Can be slung over your tent for extra protection or sun protection.

Don't even think about Alaska and the Yukon without some protection for the tent floor.

On rainy nights on soft ground you can put it inside the tent as a barrier.

It's your rain cape around camp.

Or a wrap for your sleeping bag on a cold night.

On and on.
bill