im not sure about gold leaf but you would probably be better off getting the dish chromed, it wouldent cost that much, depending on where u lived. they also sell 5 gal trpiplechrome kits at caswell plating " http://www.caswellplating.com/kits/index.html?source=overture&OVRAW=caswell&OVKEY=caswell&OVMTC=standard ".
im almost positive chrome would produce a better image quality than aluminum foil or gold leaf
well scratch the triple chrome kit lol, or any of them they cost twice as much as a prebuilt hologram dish, but i left the link up anyway because they have good deals on powder coating and black krome kits. just in case any 1 is into do it yourself parts