Any paper mills in your area? If so do you know of anyone that works there ? If you are truly in dire need of a floor try and get a piece of mill felt. Most of these paper mills up here just discard the old ones. They can be a bit heavey but are very quite and you can still drive your stakes threw it. Good Luck..

I like using a piece when setting up my tent as the ground becomes softer and I have a place to take your shoes off before entering..