I have been fishing that area from Vienna to Paydown for the last 35 years. My family has several acres off of #42 between Vienna and Belle right by the Paydown area.
Your right, it can be slow at certain times of the year but I think the fishing is pretty special. Never have kept anything but have numeroues pictures to show for it.
What I love about that area is the constant changing of fishing conditions....deep pockets, shallow water, back water, weeds, rocky areas. Every 100 feet and conditions change.
I have caught just about every type of fish you can think of around there...crappie, large and smallmouth bass, rock bass, sauger, walleye, whites, catfish, bluegill, spots, you name it. My biggest has been a 21 inch smallmouth but have caught countless number of 15 - 19 inches fish even some monster largemouth.
What I would do is rent a john boat from Indian Ford Resort by Vienna and bring a trolling motor and battery to help with those slow stretches.
If you do decide to fish that again please let me know and I would be more than happy to draw a map with hot spots to help make your trip more enjoyable.
Bob