make the loop fit tightly on the screw and orient it so that tightening the screw pulls the wire in rather than pushes it out. if done correctly, this is an excellent connection.
This is what I do with the 12-gauge single-conductor speaker wire I have running to my Maggies from my amp. I have gotten in the habit or periodically reaching behind the amp to check the connection tightness. Every few months there is a tiny, tiny bit of tightening that can be done. I don't believe I ever come close to losing signal. An occasional spray of CRC QD electronic cleaning spray doesn't hurt, either. My listening room opens to the kitchen on one long side - and we cook. A lot. You'd be amazed at what a little electrical douching will do for SQ in such an environment.