Wait, I think I figured it out. The OP was writing about Toledo Bend lake, which we all misunderstood to mean Toledo Bend reservoir. I did a little research and found that there is indeed a Toledo Bend lake and it is not the famous body of water that we are all familiar with.
Toledo Bend Lake is located in Ohio, not Texas. It was named for its location, a curve in the road right next to the stadium where the Toledo Mudhens minor league baseball team plays. It is a smaller lake, only about 150 acres, so when the OP talks about 10,000 boats on it during the weekend, you can imagine how crowded it gets. It kind of looks like Lake Havasu during Spring Break, you can literally walk across the lake by going from boat to boat. Needless to say, vertical presentations are preferred - casting will usually end up in you snagging another fisherman.
When the OP says the lake was drawn down, he is actually being kind. In fact, the lake was drained and was completely dry during the winter. When it was refilled, signs were posted that there are no fish in the lake, but that didn't stop those Ohioan bassmasters from giving it a try. Later, out of pity, a nearby tech company designed, built and released about a dozen robotic "bass" that now inhabit these waters. They are willing to bite, but there are so few of them, only catching 4 or 5 a year is about normal.