Rob, the one thing you want to consider is the fact that the big 4 are flood control lakes. I have been caught by high water 2 different times there. If you have non-refundable reservations you can be out of luck. I saw Grenada rise 5 feet in one 24 hr period the first time down and then about 8 more feet during the next week. It really made it hard. Last year, and those of you down there correct me about the amount, I think Enid was 23 feet over curve. That creates a bunch of new water to search. You may want to check how stable Euffala is. It may make a difference. That being said I still take a chance on the big 4.