here's how to possibly double or triple the amount of money (isk) that you make in your kill missions.
Now, looting wrecks is no longer the primary source of supplementary mission-income for players and corps alike.

Take advantage of the salvaging skill to make a great deal more of isk, no matter the kill mission. ESPECIALLY low level missions which pay relatively little, a 100,000 isk reward can easily turn into 1.5-2.0 million isk depending on the amount of enemies you face and how much salvagable materials you get to sell or use.

Not just for the single player, but also for corporations. With the new boost pack, the potential to have open fleets in corp can allow people to join in that may not want to fight, but can clean up the deadspace complexes for loot and money. And the rig industry in EVE, for which salvaged materials are used, is vastly profitable and lucrative at this time. For fleet based looting, whether or not you are all in a corp, have a dedicated pilot use, preferably, a destroyer.

All destroyers are set up well with numerous high-slots for one or two tractor beams, and the rest salvagers. Fit some cargo expanders and an afterburner or micro-warp drive, and you have a fast little ship that can salvage more quickly and efficiently than larger cruisers, battlecruisers, or battleships.

Have the destroyer pilot wait for all of, or most of, the fighting to be over, and then allow him to warp in to clean up the wrecks. As long as he gets to the location, you can turn in your mission for the next one etc. Make sure that you are fleeted with the salvaging person, because he will be unable to tractor beam wrecks that you've destroyed if he is not in your group, therefore making his job much more difficult.

If you are a solo pilot, consider Gallente or other ships with high drone bays and drone bandwidth. If you rely heavily on drones and tank your shields or armor, you can use your high slots for the above-mentioned salvager/tractor beam combination.

Consider, too, a drone link augmentor to increase substantially your range of your drones, so that you can wipe the floor with the mission targets and clean up once within 20km (the range of non-capital ship tractor beams). This extra range also helps to keep the npc enemies from being able to effectively hit your ship, or extra time in which to kill them while they approach thereby rendering them harmless.

It's extremely important for mission runners in EVE to level up their salvaging skills to take advantage of the system. Consider that every wreck that you leave unclaimed is money that you have essentially lost. Basically, you may pay 100,000+ isk per wreck just to leave it floating in space.