Richard,
I am sorry I didn't see this sooner. I woulda told ya to head up to the Arkansas river arm of the lake. That is the best area for cats on Keystone.
If you can, come back down to Keystone the Last weekend of May, first of June for the Keystone Gathering. It is a BLAST and you will never meet a more friendly bunch of people. Heck, when you meet everyone, you will think you are there long lost brother!!!