Up here on yorks the guys working the jetties that are serious about a feed get up real early and hit the water just before sunrise.
Most of them use a teaser, which is basically a tommy rough on the end of a line dangling under a float (good to tie some thin copper wire around the tommy to stop it getting destroyed too much), there are NO hooks on the tommy.
You have a few of these cast out at intervals and have a squid jig on a handline ready.
When you see your float with the teaser on it get pulled under the water you know you have a squid hanging around, then you get your jig ready and