heav-
yea, the 45 degree angle sounds like a nice way to do it...
my canopy just has the front and two sides and the back is completely open...except for a 1X4 brace that runs across the top and connects the two sides at the very back....heres a link to my stand and canopy...
http://all-glass.com/products/stands/mseries_black.html
you can kinda see what i mean on the picture that says...
"Single piece canopy has plenty of room under the hood:"
...so, i was just gonna hang these fans from that 1X4 board that goes across the back...and just hope to bounce some air around in there then out the open back...
if that makes any sense at all!
FWIW
brad