I have used diquat to control it with not great results. Finally decided to add some aquashade dye which has helped more this year but it is still a bit of a problem in my 1/2 acre pond.

Not a very good picture. It looks like a big wad of tangled greenery. Get some better close up detailed sharp pictures of a single nice representative strand of it and someone can identify it. See this link for a good how to:
https://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=371748#Post371748

Here is a better pic:

As you can see I have also been trying to manage it by just raking it out:

Another pic of the stuff in the water:

The plant in your hand is a good picture. Its common name is Small Pondweed also Slender Pondweed technical name is Potamogeton pusillus. Your use of blue dye forces it to live in shallow water.

Grass carp and tilapia like to eat this delicate tender pondweed. Put in just enough GC to reduce it by 50%. No more than 1 or 2 GC in 1/2 ac. Leave them in until they get a least 24"-30" long to see how much they will eat each summer. One GC can eat a pickup bed loaded with this pond weed each year. Leave some about 25% of the pondweed always grow to compete with filamentous algae by absorbing nutrients needed by FA. FA lives on nutrients not being used by other plants. If GC eliminate the pondweed they will start searching sediments for invertebrates and make the pond turbid. GC do not like to starve. A 1 or 2 GC plus tilapia will do a lot to reduce your plant problem by 50%-60%. Try to remove 10%-25% pondweed each year to remove some pond nutrients. When you get ALL the pondweed consumed it will be replaced in biomass by FA. Pondweed is easier to deal with than FA. Nature demands something will use the available nutrients. Manage the nutrients with plants that you can live with.

Thank you so much for this info. I have been out of town and just getting back on here. I put two grass carp in almost 2 years ago and they are huge now. I believe it has just taken the dye and the carp some time to catch up but it is slowly working. I don't think I will need to add another as the infestation seems to be mostly contained to the shallow water now as you said. I think I will continue raking it out here and there and reapply dye as needed.