I got some really excellent seeds off a regen girl that I had brought to harvest and then turned around and vegged it for a couple of months before flowering again. When it flowered the second time is when I got it pregnant. The advantages of this method is you know the entire history of the mother before you pollinate it. The disadvantages is that the regen after you harvest your bud, takes weeks to recover. It literally looks like it is going to die for a few weeks. After this, it bushes up real nice. The seeds were a little on the small side, but the resulting white widow seeds were consistently excellent, very similar to the mother, with a 66% female ratio average.