http://www.lrn.usace.army.mil/op/JPP...-Attractor.pdf
Here is a list of fish attractors on Percy. You may find some that will be close enough or can be accessed by foot with a little effort. They should hold crappie at different times of the year.
You can also catch crappie on the Cumberland from the bank in slack water pockets and around man made structures along the bank.