I've managed to evade them by jumping just before the missiles hit my ship and luring them into the ground or clouds. I've also tried luring them into other ships, but the missiles seem to just go straight through them. I wasn't sure if I was seeing something, or if they actually missed. I'm working on discovering different methods as well, but I get so panicky when there is a missile locked on to me. Despite that, they are a lot of fun to try and avoid.