well, ive never had any type of debris get into my sight or cams, but i have learned that its a good thing to pullmy bow backwhile im in the stand. I tried to pull it back before i got out of my stand on opening morning but was too cold and stiff to get it back. (luckily i wasnt trying toshoot a deer). now i try to keep myself loose while im hunting. guess its just one of those things you have to learn as a new bow hunter.