@whiteduck_outdoors: Setting up the fly sheet on the Regatta (works for any of our tents, btw) We make fly sheets to the exact roof measurements of every tent we offer, so the fit is always perfect. All our tents are already pretreated for water resistance, but if you're getting hit with serious rain or snow, or just want to leave it up all four seasons and forget about it, the fly sheet is your best friend.