Typically, I just clean'em where they lay. Unless, they've run into thick cover, then I'll drag'em to the field edge. Death is an everyday part of nature. I don't believe it spooks the deer anymore than an animal bedding down and dying on it's own within the area I hunt. I've actually had deer walk right by the remnants of a gut pile left from a few days earlier. As for attracting coyotes, well... they travel through the area anyway. I'm sure they're scent is more familiar to the deer in the area than mine.