You'll not go far wrong with a good make of bollie, either with pellets in a pva bag altogether, or you could use the method feeder with corn, bollie or pellet as a hook bait.
Or you could take your time and spend 10 mins with a marker rod and lead and see what clear spots if any there are.
There are a few options to beat the weed.
Personally i would use a good bollie on 1 rod and a method on the other, then see what gets you the best results, i did this last week on a new lake im fishing, the method produced 1 common and 5 bream, the bollie rod produced 2 carp, a mirror and a common, all mid doubles.
The week before i marked up, spodded up to the marker, put 2 rods on it all morning and never had a thing on it. In the afternoon i fished with pva bag chucked to where i thought would produce and had a run with in 5 mins /forum/smilies/smile_smiley.gif So its all about experimenting.