SeaCucumbers are found usually near the bottom crawling around.....
I often snag them when I am jigging by accident....
If you are jigging right on the bottom you will snag them and other things from time to time...
When I get a bottom snag that doesn't want to release, I go back in the opposite direction a ways and then pull from there...if that doesn't work I go off to the side.
Usually I get the jig back.....then straighten and re-sharpen the hooks.
But you don't always get them back.......
By the way....hooks must be barbless if you are targetting salmon.
On a treble hook for bottom fish I usually flatten one barb on the hook....this way when you get a "button-up" it is way easier to get the hook out and less damage to the fish if you are releasing it.
You can "drift-troll" a jig.....that is, just let the current carry you along (or the wind) with the jig in the water behind you. But if you do this you need a really good bead swivel where the tuffline connects to the leader.
I always have a bead swivel there on the line for jigging regardless of what I am doing.