I've been bank fishing this 10 acre pond for some time.  The biggest I've caught are 4-5lb, but mostly 1.5-3lb are the most recurring big ones I see.  LOTS of little guys.  The water is green and pretty darn clear, but there is a lot of heavy vegetation.  The areas I can cast to are only 8-25ft deep, but the bottom of the pond is probably covered by at least 5ft of thick vegetation.  If I throw even Texas rigged weighted plastics and let them sink to the bottom, the weight or bottom of the hook gets caught in the vegetation and I pull up a bunch of weeds. It's really thick stuff down there and I've even lost square bill cranks in that stuff even with a 30lb test.

 

I'm pretty confident there are some fish lurking in or around those weeds towards the bottom (plus I'm in Texas where it's hot so I bet some big ones stay deep to be cool), but once the lure gets crap all over it I'm sure it no longer looks appetizing, and fishing it fast enough to keep out of the vegetation is probably too fast for the big ones.  Also the jig/pig is nearly useless because it always gets vegetation clogged on it.  People always say to fish slow, but if I fish anything other than a square bill crank slow, it just gets completely covered in weeds.  Square bill slow is what I've caught the biggest fish with, but usually in winter or early spring time, not summer.

 

So, how should I be fishing to maximize my catching of bigger fish?  Would a Carolina rig with a 5ft leader keep the plastics just above the vegetation be a better presentation that i can also (maybe) fish slower?  Or should I just be fishing the jig/pig and all my other texas rigged plastics quickly/slowly enough to keep just above the thick stuff and just hope i get lucky?  Any advice or tips you can provide will be helpful.  Thank you.

For slower presentations I would use punching rigs and weightless flukes and senkos

 

For reaction baits I'd use chatter baits, swim jigs (Nothing more than 1/4 oz), and paddle tail swim baits with a keel weighted hook

 

If the grass is as thick as you say it is I'd use nothing less than 50lb braid.

My approach would be to find any gaps, seams, etc that may be void of vegetation, or transitions from one type to the other. I would picture the bass staging/sitting/stalking just inside the weedline (not in the middle of a big patch) where it can ambush prey that comes close. Really anything will work along the weedlines (from plastics, to jigs, to chatterbait, to swimbaits, etc). Texas-rigging a worm and dropping it in spots should work awesome. Maybe a drop shot with the bait just above the weeds. 

I'm probably the last one to be giving anyone advice, but I fish a very small pond (about one acre) that's all weedy, and my best success is weightless plastic Texas rigged, twist tail and stick.  I can just let it drop, then mostly just twitch it.  If it starts feeling like I've picked up some weeds, I'll reel in and clean off the gunk, then cast it back out.  Caught 3 in about 45 minutes that way. 

you could try a drop shot rig, like cast out and let it hit bottom and shake the worm