I'd vote that memorizing a hundred 2 letter words (many of which you likely already know) is easier than memorizing 26 mnenomics. or, you can just know a bunch and guess every once in awhile, gambling that your opponents also don't know all 101 for certain and don't want to risk challenging the one you put down;)

actually, once you move to even the low-division tournament level, pretty much everyone knows all the 2 letter words.

it's called CSW ("collins scrabble words") rather than sowpods now, since collins replaced chambers as the dictionary publisher.