You can catch crappie in both Yegua and Nails creeks all year round. Launch from Nails side.
Crappie stack up around the Big Creek tires in warmer months.
Trees and stumps around Deer Island are good too.
PM me if you need more help.
I for one love to help other anglers catch fish.
If you want info and spots on Lake Houston or Conroe ask as well.
Tight lines fellow angler.