Pre-sexing, then re-vegging?

If One is as experienced as One claims, One should be able to tell WITHIN a week FOR SURE with all strains. At least that has been the case for and my colleagues and I. We have been cultivating for around 20 years and its always been the same. On the sativa strains that take 110 days to flower show sex within a week (just an example).

When you catch it within the week, down time is a week at the most....