Taking pictures then going home to see anomalies in them and then posting them online is the wrong way to go out about things. First, if you do happen to see something that looks like it could be a Yowie you need to do follow up research to be sure what you saw wasn't a burnt tree stump etc. There has been too many people snapping away taking a load of pictures to only then post pictures full of Pariedolia. We will not get any further In knowing exactly what a Yowie is with posting pictures of assumptions with nothing to prove what in the picture is a Yowie or related to them.
If you've never hiked in thongs, you've never lived.