I was just at Tenkiller Sunday night 3/08/09. There is a decent boat ramp at the state park that won't cost anything. Most ramps on Tenkiller are corp/engineer property and have a usage fee.
Crappie have a 10inch min. on Tenkiller. Threw back 15-20 Sunday night, but kept 3 14inchers.
The rock bluff near the bridge usually holds quite a few cats. Right now you can find crappie around the bridge pillars, but water temp is up to 57 deg. spawn isn't too far off.