The idea of 'convincing' students to do the IMC is abhorrent and strikes at the heart of much that is wrong with GA today - inexperienced instructors 'milking' their studes for their own benefit.
Why not get the IMC instructor ticket because you feel you have something to offer? Why not suggest to recent studes that they should get some real solo experience - making their own mistakes - before they decide which, if any, of the post-PPL training opportunities they wish to take; eg. IMC, multi, night, tailwheel, aerobatics, air racing.... the list goes on... but how much experience do you have of any of these?!