the hockey puck shaped salt things didn't appear to do much.
The heater tape in the back did some thing, there was snow missing where the tape went zigzag, and might have been some channels through the ice dam.
On the front, not much visible change. There is one channel through the ice where I chipped and propane torched. Rest of it looks much the same.
I used the pole rig to put up some rock salt. Rock salt on the slippery ice dam slides off to the ground. Salt on the snow above the ice dam sticks in place. Might melt through the ice dam, or might melt and run under the ice dam and come through the ceiling.
Not sure what to do, now. Might take a torch or propane heater, and try to melt some of the ice off. Might try and find a roof rake, so I can remove the fresh snow before it remelts.
Might try and get Mom to let me put up some heat tape on the front, also. Meantime, not much to do but worry and wait.