Try some smaller flies, like #16, #18 sow bugs and scuds. The good old worm works as well. The fish are big and fat just like their countrymen . There is also some monster carp in the backwaters for more techinical fishing.
They stocked Sundance lake with triploids this year as well. It will be interesting to see what the fish look like in 3,4 and 5 years. The trout and perch were very interested in damsel fly nymphs today.