Keep in mind that some techniques work better at different times of year and when crappie are holding at different depths. Tightlining allows you to get down where they live. You will be surprised how easy it is to work a jig through a big brushpile without getting hung up.
Casting comes in handy when fishing over the top of a brushpile or thru a stakebed. Allows you to stay off and not spook fish in shallow water. More fun because you get to fight them longer too.
Fishing a jig under a float through a stakebed or over the top of brush can be very effective when fish are spawning.