What is the best form of training to maximise yiel...

The LST undoubtedly because the predefined life cycle does not allow cutting on autoflowering. And defolliation sparingly Good luck for your grow 🌱 May the force be with you 💪

As long they are healthy and doing good in the environment then yes You can LST train them or even top as well ,best to look up your strain and see who has tried what . The girls would be huge if left to there own they look big now and no pre-flower yet so it all preference ... Looking good

Autoflowers respond very well to LST. Thats a technic you can aways use. Most strains are well to top ( at least one time) it always depends in the plant how vigor she grows . if you top more often or not.

@Crj88 I would suggest using Low stress training for your 1st grow as the other methods require a steep learning curve and Autos are unforgiving if messed up. Once you have a harvest under your belt you can then attempt more ambitious techniques Good luck