Scroging after flip to flower

Is it alright to trim fan leaves on flowers to allow more light to lower colas

Sure can, SCROG is no problem up until small tufts form, or about 2-4 weeks of flowering. Not all, but a lot of strains will stretch 100-300% when flipped to 12/12. Hope this helps, Organoman.

Yes you can use a scrog net at this time. It is more beneficial when used in veg as you can spread your canopy out under it making a level canopy so each part gets the same amount of light. I would use a net now and then next grow use it a bit earlier.

Most people I've talked to and most things I read lead me to believe that you should flip when 80% of the net is full. Maybe a bit earlier with sativas that tend to stretch quite a bit more.

I think just about every strain stretches a little when flipped. If not, it's a genetic thing or poor conditions. You can still manipulate after the net goes up. Suppercropping makes the most sense to me if an even canopy is your true goal. You can add another net if need be, but that should really only be for support. If you add a second net to manipulate, it defeats the purpose of the first one and means you probably waited to long to flip.

Yes most stretch. Yes you can still manipulate the canopy after the switch.