If the opponent doesn't attack you but they have stronger monsters than you, I usually attack them with Blue Drag Summoner or Amazoness Chainmaster to activate the effects, and if the opponent doesn't want to attack you and keep their monsters in Def mode, use Wings Of Etaqua to change them to Att mode for you to attack
Another tactic I use is I use Emissary of Afterlife to attack an opponents monster thats stronger so it activates the effect so both players can get a piece of Exodia from their deck to their hand then I use Amazoness Chain Master to attack a stronger monster then spend 1500 LP to activate the effect which is you can look at your opponents hand then take the piece of Exodia they have.