Question 1. At first i kind of drew the min my head, then i started drawing them on paper, now on days where I have WAY TOO MANY reviews, i will trace them in the air, but at this point it just doesn't feel right, but for the lack of time I have to dedicate vs the workload sometimes I need to do this method. Otherwise if I have time I will ALWAYS write it in my notebook, it really does help immensly.
Question 2. Fluent enough to get by in whatever typical situations I could possibly be thrust into without sounding like an idiot. I'd like to say true "Fluency" but it's a term thrown around a little loosely so rather than put that, I will say it more precisely. I shouldn't have to stop and think about grammar patterns, vocab, etc unless it is something really strange and that i do not use much ( hey we all sometimes can't think of a word or something in english ) I don't care if I have an accent, everyone does, I just want to be able to speak, understand, read, write everyday Japanese.
Question 3. Anyone quitting after the 50 mark should go back to playing video games and stay there, Japanese is not for the faint of heart, I did 146 in my first day, and di the last 395 over a long weekend ^^ Apparently this is past some 1 WAN barrier, whatever that means.
I did have some health/moving/work issues making it impossible to study ( or really even sleep for that matter ) and still finished in great time, it's all about knowing your goals and doing what it takes to achieve them. Honestly the toughest times were at about 1300-1500 when the reviews were really piling up, but if they are piling up that much you are doing something right, and working hard ( assuming it's the daily reviews swamping you, not a backup, that just makes you lazy

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My motivation comes from community, people knowing what I am doing, and holding me accountable if I fail, this really helped more than anything.
Friends don't let Friends quit RTK
Peace