I certainly don't know the market in Spain, so cannot comment directly about that. In general, in my early days, when I was low on finances and had lots of time, I put my time into an organization wherever I could, to offset money I really did not have. Three good things happened from that, I did get the use of aircraft at reduced cost occasionally, as my effort was recognized. I got to know the aircraft better (particularly the many bellies I scrubbed clean!), and I got to be known by people who recognized I was a worker, and offered me more opportunity, both flying (including unusual types) and employment. I have never looked back, and always been employed in aviation since my first days as a student pilot. My financial challenge became my success!