I haven't read much about the searches, but I get the sense from a lot of posts here that searchers were very near the bodies off and on that day before finding them? Is that correct?You bring up some very valid points, Margarita. And, I believe you are correct about shoes being an important aspect of the investigation.
Your post reminded me of the first PC, where LE stated the crime scene was "very complicated". (The link for the full PC can be found on page one of the Media Thread for any new readers: IN - Abigail Williams & Liberty German, Delphi, Media, Maps, Timelines NO DISCUSSION). There were probably hundreds of shoe prints to sort through at and near the crime scene.
At the time of their discovery, it was only believed the girl's were lost and possibly injured. Because the search teams included volunteers from the community (who may not have been aware of the importance of footprint evidence), it must have been very difficult for LE to sort through all of the tracks.
If so, it tells me that the scene was not extraordinarily bloody (I hate even saying that). It sort of dissuades me from some of the more messy theories...