Has anybody come across reliable ways to know if a masculine noun is weak or not?
Der Präsident... Wir brauchen einen neuen Präsidenten.
Der Held... Gotham braucht einen Helden.
I have noticed that many weak masculine nouns tend to end with an 'e' when in nominative.
der Kunde, der Junge, der Name, der Bote....
I have also read about nouns coming from adjectives also being quite often the culprits for weak nouns.
Any other ideas?