Rusted agitator bolt

I see that I need new agitator dogs. However I can’t remove the agitator bolt because it is rusted on. I see that even to replace the entire agitator necessitates removal of this bolt. Does anyone have any advice? Thank you.

Soak it in Rust Blaster then try to move it after a few hours in both directions. Sometimes it works. I use an impact wrench and it might be the only way and sometimes even that does not work. Good luck