Coil is worth doing if you are up for that type of challenge...if you are not then there is no point.
If you are in a "non-raiding" FC then there is always a choice to be made to accomplish your goals.
Coil can be done easily in PF. It can be done in DF through T4 and that is about it. T5 you have to be work together and would be very hard to do in DF.
I suggest to the other poster to record your gameplay and then watch it back so you can learn what is going wrong...that is the best tool.
