Dunk Lords

First off, you can start the game out ahead by 2 or three points if you'd like. To do this, simply play the lobster level and do you're favorite type of score (dunk, lay-up, three-pointer, etc). Before you actually score though, pause the game, and select "Restart Level". The score will immediately go to 0-0, but your shot will complete in the final second of the game, putting the score at 2-0 or 3-0. The match will then restart with this score on the board, giving you a solid advantage.

(This works on all levels, not just the Lobster one by the way).

For most levels, a good basic strategy is to keep one of your two characters near your opponents net at all times. Upon scoring, try to use you abilities to steal back the ball, but if you miss, let your other player run defense and hopefully they get the ball back. If your opponent scores, grab the ball and pass it back to your person under then net -- therein, dunk the ball cn_RT + cn_X to get your power back. Wait for the opponents shield to go down and fire your ability, hopefully stealing the ball. Rinse, repeat.

Tips Specifically for The Giant Lobster: The giant lobster shows up around level nine. Again, the above strategy is awesome for this. The Lobster tends to throw around its Ship Wheel constantly, knocking down both your characters ... but if one if far enough away (aka under the opponent's basket) they'll have enough time to catch a pass and dunk before the wheel hits them. Therein, when you get the ball after the Lobster scores, pass as quickly as you possibly can before the Lobster fires any of its abilities.

Note: the Lobster is vulnerable to Slice's special attack, so fire away after the rebound shield drops to try to snag an extra two points on a well placed shot. A couple of special attacks landed, plus the "bonus" points you started the game with, should lift you past the Lobster fairly easily.