A good idea to cope with IEIC is to start making contingency plans as soon as you recognize that you are in deteriorating weather over difficult terrain. If you are flying as part of a crew, you can pre-brief what you are going to do....IF For example: "If we go IMC, I am going to maintain 60kts, and carry out a level turn to the right onto our escape heading of xxx." As part of a formation, IEIC actions should always be included as part of the formation brief before you depart. Its always easier to make difficult decisions before you are maxed-out!