I'm with bearklr,

Due to rain I lost a doe 2 years ago with a rifle shot and the buzzards found her, which chapped me. In some places where I hunt it is so da#$ thick, you can barely get through certain spots, it's not like those purty woods where its a high canopy and the bottom is all bare leaves. If it rains and they headed into thick stuff it can be a very tough track.

Also, whose to say that with all the practice in the world the deer doesn't jump the string or the arrow hit a branch or my nerves cause a not perfectly placed shot. Tracking a wounded deer is not a cinch. Also remember that other people may not take the best shots. I go on any tracking party when a deer is wounded. It's my bad experiences that make me want to try all this goofy stuff.