When a senko, crankbait, frog and spinnerbait are taken out of the possible answers you don't leave yourself with much. One spinnerbait you probably haven't considered is a snagless sally. Used to catch a lot of fish in the ponds of Oklahoma. Yeah it's not much to look at but it does work well where vegetation is an issue.
Tried a buzzbait? That should be working well about now, especially on a pond.
And ditch the senko for a floating worm. It's a smaller profile so it get's around the weeds easier, weighs less so it goes over better and it just works better in those conditions. They make a lot of colors but pink works well and it's easy for you to see. Work it along the edge and if there are fish there they will hit it.
I'd wear that weedline out before I started trying to fish on the bottom.