NOT FORCING YOUR STRONG TRUMP HAND
The greatest weakness and the most expensive fault in the beginner’s game is his predilection for trumping in the strong trump hand. When trumps are hopelessly against you, it may be necessary to make what you can by ruffing, but with the advantage of the make, you are seldom compelled to play a defensive game. When you needlessly force your strong hand to trump, you reduce your power to exhaust the adversaries’ trumps, to establish your suit, and to be left with the last trump—which is, par excellence, the dealer’s game.
To trump in the weak hand is always advisable, nor can any objection be raised to a “cross-ruff,” but force your strong hand only as a last resource.
If you hold the losing one of two remaining trumps, try to force the winning trump from the adversary’s hand; to force your own hand instead will materially prejudice your chance of making a suit.