so, i decided on getting some reflector material today. i went to a sheet metal place and got two thirty eight inch long pieces of aluminum (4 inches wide) bent at thirty degree angles (in 2 places) for a grand total of $4.60.
decided on the 2 x 30 degree angle configuration by going to the ahsupply website and crudely measuring the angles on one of their reflector diagrams. of course, i'll never really know if these reflectors are actually working, but i guess it's worth a try. plus, once i get the hood all assembled, i'd be less inclined to add any extra features. might as well do it now.