Absolutely !! I've single pole jigged 30ft deep with a 1/16oz jig & 4lb test mono .... and the only downside was having to wait for the jig to reach bottom
I was still able to detect the thump, even though I wasn't using as sensitive a rod as I do now.
If it should happen that the fish take a mind to drop down around or into that deep brushpile ... give this a read and try it sometime. Probably even be good when the fish are suspended well above the brush.
Crappie Pappy Article