I run a double art hades pyra I'm rather fond of, it's somewhere in between support and kill. It's particularly strong at keeping range as I can back-pedal the pyra fairly well, especially with Kerosene and buffed engines. It takes quite some time to kill on it's own, usually about 3 or 4 hull breaks but it's strong disabling power and deceptive range make it incredibly dangerous. Generally, I run it on 3v3's and 4v4's staying in the middle of the fleet either disabling someone giving trouble like a spire or galleon, or by shooting weak or exposed targets, giving them a bit less hull and maybe scoring a kill. It's ability to knock out engines and guns, and chip of pieces of permahull while taking little fire of it's own makes it a good softener of other ships, hades dual art is fantastic at making brawlers win all their brawls.
I prefer the pyra to this build, as it backpedals better than a mob or junker, has more armor and a smaller profile than the mobula, and has it's guns and balloon less easily disabled as a junker.
TL,DR; Switch between targets at convenience softening up any enemy that's gaining an advantage.