that's a heck of a lot of feedback ... I'm developing HP5+ and time is 5 minutes (Dil B) at 68 F using Ilford rapid fixer and my wash is just 4 or 5 water refills with increasing agitation frequency with each fill.

i guess by using water stop bath i'm extending the developing time minimally from 5 minutes upwards but unless i'm doing anything radically wrong in all this i'll just do it this way.