Salute!
Yes, the prisons were marked on our tgt area maps. On the sky puke drops above the undercast with a LORAN pathfinder we couldn't see anything anyway, but run in headings avoided the camps.
As far as "seeing" the chaff, our ground map radar was real good for that, and we only used the tight pencil beam for the computer "VISUAL ATTACK" mode to get range. The LORAN drops were like WW2, and we turned off the computer mode and pickled when the F-4 did.
Lastly, when the war was over, the Vee were very amenable and several of my friends have been back there and sat down for a beer or two with those old gunners..."if you weren't so lucky....", and " if you were a better shot I wouldn't be here" and so forth. One guy actually visited a small village that he bombed on a CSAR mission. There was a gun in the village and he was escorting a Jolly. He sat down at the kitchen table with one of the elders 30 years later. The Misty FAC's were also treated well when they re-visited The Trail's origin in RP1/2 years later. See "Bury Us Upside Down" by Don Shepperd.
He has a paragraph that echoes what 99% of us identify with....
Sorry not in text....
Gums sends...