Hmm. While I'm sure I could get along OK with the bottoms who just want me to fuck for my own pleasure and ignore their needs, what I personally prefer is making the bottom's eyes roll back, his head lash back and forth, and his breath come in gasps in and moans out. He should entirely lose the power of speech if I'm doing it right.
It's really not that hard to learn how to make sure your cock is slamming right into the prostate. Learn the anatomy and practice, practice, practice! (I know it's SO tedious!)
I do like to put them in a variety of positions. One of my favorites is half on his side, from behind him, but with one leg over my shoulder while I straddle the other. That way I get to see my cock sliding in, I have the leverage to pound that prostate hard, and I can grab his dick and work it if I want. Which usually, I do want.
To finish, I like to turn him on his stomach. This is the best view of the butt available. If he's cum already, I aim straight up his ass; if not, straight down toward the bed (this is how you hit the prostate in that position).
If you're a bottom to whom this sounds good, or a top who agrees, please say so!