How about a schedule of 5/2/5/9, meaning work monday to friday, take weekend off, work monday to friday again and the you go off for 9 days.
CoPilots net income about 3000 to 3500 euros = 3600 to 4200 USD.
Commuting cost out of your own pocket.
With that schedule you travel 1.5 times a month or 18 times a year.