m0useanswered grow question 10 months ago what do you mean "trainings" like LST or HST? FYI there are not a lot of breeders on this site, some pollen chuckers sure but legit breeders no. The offical "breeder profiles" or brand accounts do not look at the questions part of this webpage.
If you mean training like LST / HST, they are used to maximise growth of the plant in a gaven space not to select good phenos from my knwoledge.
If you pheno hunting I would grow them all out as is and select the best one from there. good node spaceing, dence buds nice smells and good overall health, then when you do train them it will look even better.
Good Luck!