Toward the end of the game, you want to get rid of as many tiles as you can so that they don't count against you. Or do you?
Yesterday, with less than 20 tiles to go, I got a few points for extending "RE" (considered a word in our group) to "rein" by adding "IN." That seemed like a bad move, because this opened up two columns for my two opponents who each got a multiple of the points that I did. Given the chance to play this again, I would exchanged tiles, or even passed.
Does there come a point toward the endgame where you "play not to lose" rather than "play to win?" That is, should you refrain from making moves that help you if you suspect that they will help your opponents more? Should you sometimes "burn" tiles and turns and let your opponents make moves that help you?
I'm assuming that you can't immediately end the game in your favor by using up all your tiles, and thereby preventing your opponents from responding.