I was by Gull yesterday also
Two of us fished from 10am till 3pm caught five with two additional 15"ers turned loose. We didn't catch any after 1pm. You didn't mention if you have a good fish finder and were marking fish and just couldn't get them to bite. We caught all of the fish in deep water west of most of the boats. We marked fish and trolled. Caught one keeper on each trip as when the fish didn't show on the finder we went back and started thru the same area again.
We used a trolling plate which limits boat control but it is very user friendly. Because of the limited control it is easiest to troll with the waves. I use pole holders and just straight line back. Lazy mans fishing but we catch our share. Another advantage of trolling with the wind is that when we hook a fish we can take the boat out of gear and fight the fish. The other lines still drag true and the change of speed when we slow and start back up sometimes produce more strikes.
Caught them all but one on bouncers with harnesses only two on the same color one bit on a plug. I did not see a lot of nets out there.