So how do people fine tune the newer models like Flux Klein or Zbase?

I'm not asking for settings but like the interface? I've always only used Vast ai with Kohya for illustrious fine tunes and I could never get Onetrainer to start on Vast. I don't think regular Kohya can train Flux K or Zbase? It does have to be a cloud service for the gpu because I prefer to train with the highest possible settings, preferably Vast because I keep the stuff d on google drive and I know how to transfer it to the instance from there. One with a template would be strongly preferred, I'll figure out the best settings from there through trial and error.