Question for scroggers

When do you guys stop the re-tucking under the screen and let them flower upwards? Also, I've read so many mixed reviews but, is it common practice to thin out the lower canopy midway through flower (shoots and leaves or just leaves?) what's worked best for any of ya'llz who have done a few scrogs?

 

fill the screan 1/3-1/2 way depending on how much it streaches. flip lights 1-2 weeks in strip everything that dosent hit the screen and it will fill in. its really strain dependant and you gotta get creative.