I have found that "deep" throat is a matter of angles. If the man is laying flat on his back and I am lying beside him laying kinda on his chest approaching the cock from that direction I can usually take it all. I understand that some ABS are now selling candy teeth guards that a "novice" can place over their teeth to insure they don't "scrape" (never had the need for it myself)
I also have had great success approaching from a lower level with the guy higher than I am. Such as him standing on a set of stairs a few steps higher than me.
I have found that a little patience, a good sense of humour, and talking to each other..."oh yeah, baby that's it...that's the spot... do that some more....uhhh don't like that..." that kinda thing helps a lot. Feedback from my guy makes me want to work even harder to blow everything including his mind.