Cabalas/BPS now sells these in packs. of 3. They call them trolling weights. You will need 1 oz. for the grass under the surface and 1.5 oz. for the mats. I cut the swivels off because there is no twist.
This will help you get that huge fish you have been looking for. Nothing will beat it. Knowing how to fish deep grass is one of them. Especially getting in the matted areas. If the wind is blowing you can get in there on the upwind side; put the trolling motor up and big motor up and walk the boat across the mat by rocking the boat from side to side.
I have fished the deep grass at Lake Amistad for 30 years. Here is what you do. In the heat of the day when they are burred up in the grass.
Rig a heavy drop shot rig:
5.0 heavy super line hook. Tied on 50# braid. Use a Palomar knot. Leave the tag end at 5 inches long. Tie a 1 oz. weight to the tag end. I just tie a knot in the end of the tag, then use a overhand slip knot to attach the weight. It doesn't take much to keep it on. When I am fishing grass and hardwoods and it gets hung on the wood I can pull it off and come out with the hook and fish. You understand that the hook is about 4 to 5 inches above the weight, so the tails of the bait will hang down and cover the weight.
Use a Gene Lawrue Hoo Daddy Jr. in Watermelon Neon.
It will drop in the grass and come out of the grass with no hang-ups.
Fish vertical to 20% in front of the boat. Directly over the bait is best on the deepest grass. Drop it in slowly and soft so it is traveling slowly when it touches the bottom. The Bass hate anything sneaking in on them. Hold it there with a tight line for about 5 seconds without any movement. They don't want it bouncing up and down. This gives them time to swim through the hollow under the grass and nail the bait.
Vertical presentation and moving along the outer edge of the grass line, making pitches out in front of the boat so by the time it gets to the bottom you are directly over the bait for the hook set.