Jeremy Howe should get a look in.
Although he probably hangs more than he hovers.
By the way, this may be contrary to everything here, but I've always thought Gibcus floats, not hovers.
He seems to have some sort of neutral buoyancy in the very thin medium of air, made all the more impossible by the density of his lower half.
It take a sophisticated clinician,
To differentiate between a hover and a float