One of my colleagues was a search and rescue diver for the fire service up until a few years ago. He is an advanced paramedic now. I asked him his opinion on this case. He didn’t know the details in depth, but said that important to remember that in fresh water, such as this particular section of the river that the police are focusing on (or lake water), that a body would sink very quickly and could easily become embedded in metres of silt at the bottom. Which we know now anyway.
He said that unless the river was actually diverted and the silt was searched with rods that there is no way to rule out that she is not in there, but that this is an absolutely massive amount of money and resources and unrealistic. He said potentially you could be trapped under a tree or buried in reeds and if it’s deep and cold you could be almost frozen so would weigh a tonne, so might not necessarily ever float to the surface, as bodies in fresh water tend to become neutrally buoyant after time, which could be days/weeks/months. Which means that they could just lift up enough to flow with the current but never enough to become positively buoyant to float on the surface. This is different in salt water, as a body would rise more to the surface.
He reckons she could be still in there and going out to sea not beyond the realms of possibility but probably too late now to know.
He was also wondering had the big lake in the field close to where she was last seen been searched. I’m not sure if this was searched or not, but it wasn’t searched by Faulding and his sonar which he felt was potentially an oversight.
He feels the police have coordinates or some information to confirm the ‘entry point’ and that’s why the focus is near the bench.
Just thought that might be interesting to some.