I can't quite agree with 果報者. You see, your example is not really about the word ともかく, but rather ～はともかく. This is a wholly different grammar. Translation: Let's skip my speaking, what I'm not good at is writing. ～はともかく means that you want to skip the current topic and move to the next (let's not talk about X, but rather Y). It doesn't really have a good translation, so you must suffice with something that's rather close. Hope this helps :D

ともかく（兎も角）= とにかく（兎に角）= in any case, at any rate, anyway, since, as, now that.