While during the 1000 yahren war the Colonials sought to destroy every tanker they found, the Galactica sought to capture them, so that the fleet could replenish it is fuel. This scenario attempts to recreate a typical mission - the tankers have been spotted, and now the Vipers are sent in to destroy their escorts and then disable them so that they can be boarded and piloted back to the fleet.
If the tankers are captured, then this is a Colonial victory, else it is a Cylon victory.
If the scenario is too easy, make the tankers the armed variety, they will then be a lot more difficult too disable. Or, by increasing the amount of Viper flights, consider throwing in a TKR-V fighter carrier, or TKR-Q Tanker. The extra firepower and Raiders will make the scenario a lot more challenging.
Alternately, the map could be made fixed, with the tankers starting at one end of the map, and the Colonials attacking from the other. A tanker leaving from the opposite map edge has escaped.
Cylons: The odds are stacked against you in this. The Raiders will not (shouldn't) last long, so the trick will be to stay away from the approaching shuttles so that the Vipers have to attack you and hope they hit the fuel! Convert the deck crews to boarding parties as soon as possible, after all your Raiders will not be coming back, and you will have to be boarded at some point.
Colonials: The Cylon fighters are not really that much of a threat to four Viper flights, although they might go after the shuttles with boarding parties, so you will have to destroy them quickly. The trick here to is to disable the tankers without destroying them, which will not be an easy thing. you will have to use non violent combat to stand any chance of the shuttles catching up, although landing your Vipers in the tankers and converting the pilots to boarding parties is certainly a risky option.
Usually the Colonials managed to capture the freighters, failure was mainly due to bad luck when trying to knock out the tankers engines. Against armed tankers was a different matter, and almost all cases resulted in a lost tanker or lost shuttle trying to board. Luckily armed tankers were rare.