In the eighties we used to use spoons a lot. Once the zebra mussels cleared up the water, spoons became much less effective. Off Barcelona it would probably work well to do at least one, because there are a lot of steel head there close to shore in the spring.
If I'm trolling deep diver stick baits (bomber long A's), I'll occasionally use a 3 way swivel and tie a small light spoon above the stick bait on a 3 foot leader. I like alpena diamonds the best, but they are very hard to find these days. Walleyes will almost always hit the spoon because they think the stick is chasing the small spoon I guess.
When the white bass and sheep head are brutal, or you run out of night crawlers, I switch to shallow stick bags (Renosky's).
Take off the front hook so it doesn't get caught in the net. Walleyes never hit the front hook anyway. Put a half a crawler on the back hook or a full crawler on the middle hook.