[mamurphy]

A couple of comments are slightly misconstruing the "rack management" strategy. Using all your letters for the 50 point bonus is sometimes OK.

>they increasingly hold off on other high-scoring moves, such as six-letter words, or seven-letter terms that only use six tiles from the rack. Instead, by spelling four- or five-letter words, a player can keep their most useful tiles—like E-D or I-N-G—for the next round, a strategy called rack management. The Nigerians rehearse it during dayslong scrimmage sessions.

My paraphrasing: "unless you are using all your tiles for the 50 points bonus, make sure you have decent letters after your turn; even then, consider whether the bonus is worth it."

Examples off the top of my head: what's especially decried is using 6 of your letters leaving "Q" or 5 of your letters, leaving you with something like "LW" and 5 randoms, which makes for awkward turns.