Warbird, they do make cedar sheets but I would not recommend it. Is there any cedar there in the woods? The cedar sheets would need a sealant on it and thats another scent to think about. Get some 3/8 masonite lapp siding and home depot has it for about $35.00 for a 4x8 sht. and it comes primed. You can also use 1x6 cedar without sealing it if cedar is in the woods there. Even 1x6 pine will last for about 10 yrs but what ever you use, get it out their so it can get weathered and the game gets accustom to it being their, its something you don't want to make the week b4 hunting season, whatever you us. Good Luck.
Bobby