Nice ''Chuck'', this is the ''holy grail'' of finishes as far as lures are concerned, great result and thank you for posting.
I have been dabbling with this problem too for a while, mainly using gold and silver leaf which is not as ''chromy'' as heat transfer foil. - I have also tried transfer foil but all were attempted using various ''glue sizes'' with varying results,,,50/50 .
Your process with the vacuum appears to have overcome some of my problems (mainly inconsistencies in the coating). From past experience, one area I think may be helpful to you is in your use of 30 min epoxy- I played around with this and it seemed a bit too touchy in that one day it would tack up after 3 hours and next day it would be 4. SO I started experimenting with UV epoxies, very quick set but again very inconsistent,, except for a "Solarez Epoxy'', which on curing (in a couple of minutes in the sun) it retains a tac on the surface which will ''grab'' anything that comes in contact including leaf, but not sure about heat foil - this tack lasts for days, even weeks.
As an aside I have wrapped lure blanks in gold leaf, then inserted it into a latex tube, with a suction pump (food vacuum machine) the air is removed from the tube, atmospheric pressure then presses the tube onto the leaf , then the leaf (or foil maybe) onto the lure, works very well with gold /silver ''leaf'' but the down side is leaf is very delicate to handle.
And by the way the best latex tubes I have found are condoms which may be a problem over there !!!!!!!!! .
Thanks again for posting and keep the results coming.