Portable downrigger

[Seahunt]

Yes!
Once your line is in the Chamberlain release  (I like 6 twists), thumb your spool with line taught to the release. Point the rod tip out beyond the rigger and ensure the line's not wrapped around your cable. While deploying your rigger, continue to thumb your (free) spool or have adequate drag tension to keep your line taught, but not too much to allow the line to break.

Tip: if your lure's hung up in the cable or release, don't snap it. Bring your release up to where you can find out what's wrong. It's a lure saver.
If your line gets wrapped around the cable, change out your leader or at least inspect it carefully. Mono does not get along well with braided wire.   
   

[Mac Attack]

Point the rod tip out beyond the rigger and ensure the line's not wrapped around your cable. While deploying your rigger, continue to thumb your (free) spool or have adequate drag tension to keep your line taught, but not too much to allow the line to break.

yup


Even more important when letting out dipseys.