The Raptors were used to lead the Colonial ships through the Ion/Radiation storm because their nav units were geared to survive in those types of environments.
So the Raptors would fly in ahead of their ship, computate the jump point to the clear area of space, transmit those coordinates to the Colonial ship, and then jump to safety.
Now as we saw , a few Colonial ships were lost because the Raptors lost *sight* of them, and could not transmit their coordinates to retrieve them safely.
Wait for it....wait for it...
Why did they not just have a Raptor docked on each one of the Colonial ships?
Do you have someone running out infront of your car with a GPS unit and a radio telling you where to go?
There was absolutely no logical reason that any of those ships or crew members had to be lost like that.
Even if they could not dock a Raptor to each ship I find it hard to believe that they would not have military grade nav units available as spares/refits to temporarily equip the Colonial ships.
There is no reason that a Raptor could not have docked within the ships as described above, but lets say fo funs sake they could not.
Why could they not use the jump points already computated by Athena? So now they cannot preprogram a series of jump points based on solid numbers crunched by the Raptor?
When a Battlestar jumps, it does not know what is in the area that it is folding into, so saying that they needed to scan the area prior to each jump doesn't work here. This is not Star Trek technology you know!
Even though the Colonial ships would not be able to compute the jump point within the radiation storm, they could reliably coordinate and jump in from normal space to the Raptors known coordinates in the radiation field, and jump out to the known coordinates in the free area.