I am not the overseer of all psy trance kick and bass but I know a few bits and bobs. Just as well as every time I make a track I use different synths different processing and I enjoy that, at least 5 different bass synths (I like Bazzism and Kick2 equally for different reasons). There is no easy answer, there is no.... do X, Y and Z and then you have great kick and bass. (How many times did you follow the many tutorials and got to the end thinking it sounds nothing like the video !) Never think of this as bass alone or kick alone, both affect the character of the overlap, they are as one (and as far as phase goes the kick is dropping in pitch so phase will be aligned for what? one or 2 cycles ?). No one will see your oscilloscope or phase alignment tool on the dance floor or when they listen to your track. Visual tools are however useful, for myself personally as a second check or once thing start sounding just about right.
Phase is 1 parameter of many interdependent parameters, it is important, it stops odd psychoacoustic effects and inconsistent sound and cancellation of sub.
So 4-5 hours roughly to get something just about acceptable usually, that is synthesizing the kick and the bass line. Sometimes I will commit to audio and sometimes not, some synths do a better job than others in this regards.
I spend more time on the listening for a few days, thinking... "Has this invoked the spirit of the last 2 decades of this music ? " more than I look at an oscilloscope. I test a kick and bass (and then snare and hat) at least 3-5 times on a different day deliberating if I have the "feel and effect" right before I will build a track on top. And on more than one occasion I scrap the entire kick and bass and start again because I have not achieved my goal or feel I can do better or the effect I wanted was absent.
If kick and bass was just aligning phase up everyone's kick and bass would be great and probably sound the same right ? Clearly this is not the case.
In my experience perception of good kick and bass varies a fair bit between producers. If we all listed our top 3 kick and basses the variation would likely be all over the place... this alone makes nonsense of it being a purely technical exercise.
All the tools and techniques on YouTube etc. are very useful but in the end I think once you have all the techniques, in themselves a big job to absorb, you are still on your own in that final say so of .. if this what I want and is this good enough for me and my aspirations/goals.
If it is sounding right and working everywhere you play it on headphones and speakers you are golden.
And there is no shame in using a sample either, some people's idea of creativity and fun is not making their own kick and bass, no one sees your sampler or synth on the dance floor. Using synths is more of a personal technical challenge / feeling of satisfaction after release for me, so far no bass samples used.
Just like becoming good at anything in life, you learn, apply, test and experiment, you may make less than stellar kick and bass initially but slowly you refine and through multiple experiments it starts to come together more consistently and quickly because you evolve out errors in your methodology, you also get an aural memory for what good kick and bass is to you personally.