Depends on what you mean by weedy. usually underwater vegetation a couple feet below the surface can be a great place to throw a spinner bait/top water popper. Spinner baits will cut through some very thick hydros, and top water sticks/poppers etc will keep the bait high enough to not get snagged, and attract a lot of attention doing so.
If your talking about thick, matted weeds, lily pads, etc. Senkos and Frogs hands down. I like to have 2 rods ready for this. I usually run either a SPRO or Tru Tungsten frog slowly cross the pads and weeds. Always stop at an opening for a few seconds before continuing your retrieve. Bass train reck these guys like no tomorrow. Often times however, they will miss, or you will fail to get a proper hook set. This is when i take the Senko and drop it right into that same opening. 3/4 times that bass is going to take it.
Good Fishing!