Beginner Questions

Hello,

Three real beginner questions, please:

a. when and where do you folks like to use that Power-Bait moldable stuff
(or the chunks) ?
Would you use it on a bare hook, or as an "adjunct" on some type of rig ?

b. Do ypou like to use a trailer, such as a power-bait crawdad, or such, on
a "jig" that also has marabou like feathers ? Or, is this a bit "much" ?

c. How do you fish a "jig" ? Only vertically, or cast and retrieve, or... ?

Thanks,
B.