LEADING TRUMPS TO PREVENT A RUFF IN THE WEAK TRUMP HAND
When the dealer seems backward about leading trumps, the inference is that he is trying to establish a ruff in the weak trump hand, and you should be on the alert to prevent this by leading trumps (through the strength). It may be necessary for you to lead the trump after your initial lead. It may be advisable to stop leading a suit, which would help to establish a ruff in the weak hand; or it may be essential that you try to place your partner in the lead, so that he can lead the trumps through the strong hand. If you are weak in dummy’s long suit, it is always more or less dangerous to lead trumps. When this is the case, your lead might help the dealer to exhaust trumps and make this long suit.