Swiss show the way
In the early northern autumn of 2011 the Swiss showed the way to protect international competiveness, the Guardian article sums up the situation back then:
http://www.guardian.co.uk/business/2011/sep/06/switzerland-pegs-swiss-franc-euro
Since the then Governor of the Swiss National Bank has had to resign over an insider trading issue but the Chairman and the SNB have continued to hold the Swiss Franc above the 1.2 mark.

The mechanisms are well known all that is needed is the will.