In 2011 I brought a large tarp to place on the bottom and close off the gap on the sides, and also some pieces of tarp and tarp clips to close of the gaps around the end rib. 10mx30m Transparent Camping Tent, High Peak Party Tent, Tent Manufacturer China http://www.partytentforsale.com/10mx30m-transparent-camping-tent-high-peak-tent-tent-manufacturer-china.html