Fixating on winter months pay and complaining about it simply shows naivety if you ask me. I always found it strange when FO’s would brag about how much they made during the summer, and then whine when the reverse was true in the winter. I use to just work out what 800hrs pay was and pay myself 800/12 worth of hours each month to cover me for months off/slow months. Anything over 800 hrs a year was a bonus at the end. Think some people need to understand you can’t do 100hrs every month of the year...
Of course I’m not advocating the employment practices there, but if you were/are a contractor, it’s not rocket science - and ending up with 500-1000euro net pay in any month, is no ones else’s fault but your own.