Man, I love the fragment cannons. Nothing beats whittling down an enemy's shields with the pulse lasers, closing in to unload both barrels and watching the chunks come off his health. Bounty hunting is more fun than I thought.
I named my Viper the Shotgun Boogie for precisely this reason. Also because I've started on a theme: my courier/minibus Adder is the Wild Goose. Two points to whoever guesses what I'm going to call my mining ship once I've got it.
(also, there's nothing like a police scanner module is there? I wish there were a way to find wanted dudes without hanging out at nav beacons or flying around trawling for signals)
Go see one of the engineers and get Double Shot on those shotguns. Its like having 2 double-barrel shotguns strapped to your ship
You can find lots of wanted prey at a Resource Extraction Site or RES. Head to any planet with rings and you will typically see several sites you can visit, ranging from "Low" to "Hazardous". This indicates the difficulty of enemies there and the police presence.
You will see miners doing their thing, security forces hanging around, and lots of wanted pirates. Just don't shoot the cops. Like, at all, even by accident.