No mate, all standard settings except gain. We had a lot of "interference" for the top 5-10mts through the day, I thought it was muck in the water as it came and went a bit. The -587 has been amazing, we've only had it for a few months and it kills!
And yes they were, we got one of them to take a lure (second pic), but it came in on the short corner which had dirty great hooks in it, so we never really had a chance of staying connected. The fish that we fought for a half hour was on the long 'rigger and was light gauge hooks (PM me if you want some more info on 'em mate).
EDIT: the marlin that came in on the SC was only about 20-30kg, which is why I didn't think we'd keep him connected with such big hooks.