2 deck would be better, but it is what it is. I am not giving up, and I still enjoy the thrill of laying out two hands of $50 or 3 hands of $75...get that bit of an adrenaline rush.
You have something backward. Why would you have more money bet on each of three hands than what you have bet on each of two hands? Unless you are sure there is only going to be one more round left to be played in the shoe there is no reason to be playing three spots. Last, if you are experiencing adrenaline rushes you are not properly prepared for what it takes for beating the game.