RDR's breeders page shows Platy X Normal looking offspring of Platy for 2005 clutch 42 and 71 (each producing 1 platy) and 2007 clutch 7 (one platy), 12 (2 platy), and 29 (no platy).
He also eventually produced a normal looking female from Platy X Platy that should be homozygous for the hidden allele and when bred to a homozygous lesser should produce all Platy.