Isn't "Wapanese" a derogatory term =P?
There are a few non-asian people doing it via OHS (I'm Asian).
For the Continuers course, there really isn't much kanji we have to remember. THis is how I remember kanji - either 1) write it so often I just remember it OR 2) break it down into 'easier' kanji. For example - 様[sama] <-- Tree 木 + Sheep 羊 + Water 水 and then try to connect it to some bizarre thing/phrase/words/object etc to remember it lol...
Also, would put kanji chart up in the toilet so that when you go to do your thing, you'll inevitably look at the chart while waiting haha.
For vocab, I personally remember words that I've forgotten or don't know in a distinct situation, having to look it up and then remembering it because of that 'situation'. Keep revising vocab daily too (I don't do this though lol). Also could try putting that word into a sentence, saying the sentence in English or even listening to the lyrics of a song that you really like and want to learn the meaning for, looking up each word you don't know and somehow remembering it that way (though I don't know how relevant those words would be to this course lol).
I'm selective with the vocab I remember, I tend to ignore words that aren't required for the course or words that I think will not be used often. I make sure to remember any important words before moving on with the work.
Not so sure how much or if my suggestions will help you though.