I think the concern was possibly that the small window of conception using that method could result in it taking much longer to conceive as opposed to sperm laying in wait for days LOL. There was also mention of the egg possibly not staying viable for the whole 20 hours from release. Not quite sure really that's why I was asking what other people thought. Thanks for your response, it is my first choice of method and you made me feel more optimistic about it! May I ask, did you do only o+12 or a combo of cut off as well? Thanks so much for your help!!