I use mine a lot as well, we don't have very many trees suitable for treestands, so when I am on the move I will use the bouble bull. I do brush in the blind on the outside....I have never put brush on the inside!!!!!!!
I have always used the shoot thru mesh and I normally wear black, have used regular camo but black works the best if your blind is black on the inside....I mainly wear black shirt, gloves and hat. During early season I have worn shorts as well (it can get hot in the DB)......