Was in Huntsville SP the second week of July. Had a great time.
A couple of things to note.
1. Bass are catch and release ONLY!
2. Motorized boats are limited to idle speed only. Great for kayaking. Yea!
3. Most of the camping slots are first-come, first-served, so try to get there as close to check-in as possible, or get there on an off day.
4. Access to the waterfront is limited due to lakeside growth and giant salvinia.
I saw a woman catch a ~5 lb bass off of one of the piers. I was catching 8, 9 and 10" red-eared sunfish like it was Christmas. The biggest I caught was 1/8" shy of 11".
The big guy/gal:
Most of them were caught on flies. The biggun was caught drowning worms right at dark.