I got trustworthy rep with the Turks and have been maintaining it by releasing troops from the many Hungarian and Egyptian stacks constantly partying around my lands ,only occupying settlements and staying within my boundaries from Constantinople to Alexandria.

Strangely though, despite Hungary's senseless aggression it is also Trustworthy.
Now I'm trying to work my way to immaculate rep

releasing troops is the best way to gain rep, the more troops released the better.