I bought the 14" and have it angled back quite a bit. I'm 6'1" and the air blast isn't very rough. I have noticed that quite a bit of air actually comes up from under the mount area. I was planning to block this area off with a thin piece of plexiglass bolted to the bottom of the mounts.
All...
30 foot usb extention cable, over the exercise machine, out through the window across the porch, over the railing onto the front lawn and hook to the bike. Who needs a laptop