This article on trial tactics suggests that probably no rule of thumb is more important to a trial lawyer than this: You need only one good theory of admissibility or objection to win a point, and in many instances the key is to pick the winner and avoid the losers. The rule is easy to state and widely acknowledged. It is more difficult, however, to apply than to acknowledge. A related rule is that a lawyer who has a powerful, potentially winning argument, may ultimately lose if that argument is lost in a flurry of less persuasive arguments.
GW Paper Series
GWU Legal Studies Research Paper No. 453; GWU Law School Public Law Research Paper No. 453
Stephen A. Saltzburg, Picking the Correct Argument, 23 Crim. Just. (2008).