Any process that activates or increases the frequency, rate or extent of protein localization to prospore membrane.
Synonyms:
exact_synonym:
positive regulation of protein localisation to prospore membrane
related_synonym:
positive regulation of protein targeting to FSM; positive regulation of protein targeting to ascospore-type prospore membrane; positive regulation of protein targeting to forespore membrane; positive regulation of protein targeting to prospore membrane; positive regulation of protein-prospore membrane targeting