"Can we observe decaying tiny string knot black holes like Hawking predicted in 2016?" Yes !
String Knots seem to be NON Fermionic String Knots. ( No quarks No Leptons, only constituencies called : Strings (Compacted in a variable (un)stable large Knot by the oscillating Casimir -Axion string vacuum pressure)
Hawking expected in a speech: 2016 tiny black holes in the LHC in Geneva.
see: https://youtu.be/mVTiIfz7-BI
YES we can ! in nature by evaporating ball lightnings!! ( Q-FFF Theory)
(However, even in the UFO dust particles in the LHC Geneva. see below)
see:
https://youtu.be/veBVrb0JCPg
https://youtu.be/Y6oCTWDeL8c
https://youtu.be/puFBnUsqVIg
Hawking expected in a speech: 2016 tiny black holes in the LHC in Geneva.
see: https://youtu.be/mVTiIfz7-BI
YES we can ! in nature by evaporating ball lightnings!! ( Q-FFF Theory)
(However, even in the UFO dust particles in the LHC Geneva. see below)
see:
https://youtu.be/veBVrb0JCPg
https://youtu.be/Y6oCTWDeL8c
https://youtu.be/puFBnUsqVIg
https://www.youtube.com/watch?v=iCKgiYEWKOA
AND:
Silicon Based Ball Lightning Globule Structures and Signs For accumulation and retarded decrease of tunneling energy bullets.
https://vixra.org/pdf/1302.0172v3.pdf
How the Penrose Horizon is responsible for the violation of the second law of Thermodynamics. to form plasma out of the Axion vacuum.
AND:
Silicon Based Ball Lightning Globule Structures and Signs For accumulation and retarded decrease of tunneling energy bullets.
https://vixra.org/pdf/1302.0172v3.pdf
Strings: 
In the Lab creation of unstable charged micro string Black Holes, by silicon disc discharges.
Two equal sized micro black holes ( in Herbig Haro position) propelled by Fermionic plasma tails. photo taken from a passenger plane.
Star formation between 2x equal sized HERBIG HARO Black holes.
Evidence for local interference knots by lightning ( string compactification?)
