hermies come from stress, so low stress training should be fine. Ive lstd lots and never had a herm, no worries
"its been an hour and a half and the main cola still hasnt bent towards the light" lol damn man, that's no time at all, give her at least 12-24hrs and see whats up.
I think the main reason for lsting during veg isnt because of less stress, but because the plant is growing vigorously with the stems and leaves and branches, and responds better in both rectifying itself and shooting out from the exposed branch sites, bushing up. Its not necessarily gonna be more stressful during flowering, just that the plant is trying to build bud, not so much grow bigger, so it might not respond as vigorously in terms of righting the stem back towards the light, and its obviously not gonna be prioritising leaf or bushing...
Its still beneficial to train the colas during flowering [if the opportunity arises] because you can arrange them around the bulb to maximise the light they get and to keep the canopy even.
If your cola doesnt move toward the light on its own, you can just position it wherever the hell you want and it'll probably stay there.
I like to keep my colas mostly vertical once theyre starting to develop because if you make them horizontal they have a tendency to stay that way and grow mini colas all sticking up from the horizontal stem instead of one big dense cola. funny lookin.
oh yeah, and stems are harder during flowering because the plants older, so its good to be gentle
have fun, and try lst during veg next time to bush em out before you flower, I promise its a good idea