The 7 can be split; it is often possible to do so such that one of the pieces winds up on a slide, thus increasing the value of this card.
Another smart move requires two pawns in play: While marching one pawn around the board, a player can leave a second pawn near "Start" (within two squares of the dot) and wait for the 4 card to be drawn and moving the second pawn into position to run quickly "Home".