Pilar-
Were the fish Sauries? They look like little ballyhoo.
Or maybe shortbelly rockfish?
They look like tiny perch. These are the most common feed for late season albies.
Salmonator-
Noise from the engine is not a factor. I run a 225hp O/B and I think we were highliner last thursday when I needed to call it b/c of fuel. I don't think electronics should matter either. We were running 100 pound leader on our 4 stand up rods and 200 pound on the 2 meat lines. Leader length should be 6'.
You just need to keep mucking with your pattern (colors, lengths) until you hit the fish, and listen to those who are having success around you.
When we were out Thursday, I know you had jumpers while puffin and I were banging fish and you weren't coming our way. It's hard to leave fish you can see, but jumping albies can be hard to get to bite. The fish you are targeting on the troll are hanging at 250' and come up for your lures. Fish on the surface can't see your baits at all. The old saying should be never leave BITING fish to find BITING fish. Jumpers frequently won't bite. I would pick up my gear and leave jumpers to go to biting fish every time.
Also, work the cold/warm water edge. It sounds like you overran the fish if you went 50 miles. They stay near the edge of the coldwater. I made the same mistake Thursday, I kept heading out to find the bite, when we overran it to start with.
KB