I pick up any flagging tape I come across left by litterbugs.As well as your other trash. I dispise going in a nice serene setting and seeing fluroscent trash that some hunter tries to blaze a trail in to the stand and the tape sets out in the woods and rots.
Learn to navagate the woods without using tape to find your way and get to your stand early, first come first serve, and you had better pack a lunch if you don't.

Bobby