I hate glide approaches, probably because I don't practice them enough. On my Skills test I landed very long on my flapless landing. The examiner was fine with this and as other posters have said if you were in a real emergency the main thing is that you got down ok, same goes for the glide approach. Don't be afraid to go around if you are going to mess it up, just go around but tell your examiner that you are going to and why, and you should be fine! I think the main thing that has always helped me with the this type of approach is keeping the runway threshold in a constant aspect as you turn in that way you won't end up (depending on your speed) way too high or too low.