This is easy.  Simply devote all available female officers to investigate / re-investigate all past and current sexual assault allegations.  Once the same conclusion is made in each case that the complainant's evidence is completely irrefutable, send each already obviously guilty man to be judged by a jury of his peers.  Much time could be saved in court if jury selection was limited to women, as they would not need to hear details as to why they should find the already guilty man guilty.