Yeah well in the end its very easy.
http://www.aip.org/png/images/quark-spin-png.jpg
How hard is that?
i mean, we can use these quarks and go in even more deeper. Use microscopes or whatever the technology we use nowadays to observe them, then use them.
hello again.
ok so we take these protons.. use them as fuel for the quark reactor.
hello again.
well we make such conditions where we can free these quarks and use them as fuel for the quark reactor.
its not that hard you know.