There are very many GTO experts and tools out there. But do they know how not to over-bluff or under-bluff?
I suggest you to test your GTO knowledge, GTO understanding and your choice of GTO learning and training tools, or even advertise your GTO coaching abilities by answering the next questions:

1 What are the average, minimum and maximum bluffing frequencies for turn barrel across all flop textures and turn runouts?
2 How can you explain deviations from average turn bluffing frequency, and from bluff to value ratio formula?
3 On what flop texture + runout combination GTO bluff barrels turn the most?
4 The least?

5 On what flop texture(s) GTO bluff barrels turn the most?
6 Why?
7 What is the bluffing frequency here?

8 On what flop texture(s) GTO bluff barrels turn the least?
9 Why?
10 What is the bluffing frequency here?

11 On what turn runout category GTO bluff barrels turn the most?
12 Why?
13 What is the bluffing frequency here?

14 On what turn runout category GTO bluff barrels turn the least?
15 Why?
16 What is the bluffing frequency here?

I plan to answer these questions for HU scenario node locked for 100% flop cbet with 1/3 pot in about a month, if other people do not answer by that time.