Incline push-ups really depend on the angle more than anything. What you can do is while doing your incline push ups, try pushing yourself back up to standing. That will train your explosive strength which in turn will help with your force production in your regular push ups. So push as fast as you can and breathe out as fast as you can to push your self up to standing from a slight incline push up. Once the angle gets easy, make the angle a little sharper and do it again.