First: you're welcome. ^^
About Ruderalis crosses, I grow them in the same way that any other cannabis plant, the only change being in photoperiods.
And about using trellis, I only use it in very compact project (like computer case grow space) to do LST in Veg.
In other cases, because of the continuous defoliation, I don't feel the need to do a lot of training on my plants, only toping, FIM or pinching, for height control and depending of the strain.