A t-rigged worm would be my 1st choice.
But almost more important than the bait selection, is practicing getting a bait through the brush.
You really have to finesse a worm, or any bait, through trees, brush etc...
First, visualize the brush/cover you are throwing to. Visualize your worm/line draped over a limb and pull slowly up to the limb. You will feel the weight hit the cover, then just shake the rod tip and pop it over. Picture all this going on underwater.
Not only will the bait come through the cover better, this slow/finesse type of retrieve usually yields more bites as it's a more natural look.
Now go visualize and attack!!