Yes, Usually they will double in size when they flip from veg to flower. You can LST them throughout the whole grow. I see this a lot to open up the canopy to get more light to all of the bud sites.
Happy growing and good luck
Servus Mate,
U can bend ur plant however u want. Your Main goal should be to bring all, or most of the budsites towards the light. Have a Look at my Mamba Negra Diary. U can Check Out my training i did to her. Good Luck! Servus