I usually use a flat serve, but I take pace off it to place it, usually to the weaker side. Sometimes I hit a slider to catch them off guard. For the second serve, slice so they have to pop it up or kick to the backhand to force them to make a good passing shot.
The biggest weakness I find is in the serve. If it isn't good enough, you're screwed. It doesn't matter how good of a volleyer you are, you're gonna get passed. Another thing is don't stand on top of the net or the guy is gonna hit lob after lob. You also have to come in real fast off the serve or you're caught in no man's land.
Head Youtek Prestige Pro 4g @12, 6g @ 3&9, 16g @ buttcap
Genesis Spin X 17g or Typhoon 16L 70#