OK Daloaf, i have a student who is having the same problem with his Stryker, and we used some 2 inch wide white and red sticky tape available from hobby shops and laid it out on the underside of the wing to form a red and white vee, remember only do the underside of the wing. Visibility improved immensely, and after a couple of more lessons my student will be going solo.Hope this helps you also, just remember not to fly too far away from you that it only becomes a dot in the sky. Happy flying