I have found that Leebo-introduced Iversen Method helps a lot in kickstarting Kanji writing.
Since I stopped individual Kanji writing around Lv53, for about 2 months, I find resuming Kanji writing difficult. This technique is a big help this time.
The Google Spreadsheet I used for shadowing. And, I write Kanji vertically and repeatedly on a digital paper.
I believe individual Kanji writing would help in killing leeches.
For my custom beyond-Level-60, this will be easy to do, since there is already a spreadsheet.