Hi Paul,
I fish them for pike primarily and have never yet tried them on trout. But
these are the jobs that I use - they do have wee'uns for trout. Though maybe you could just use densely spun deer hair.
To mount the hook and popper body I use epoxy (the hooks are specially designed and both they and the body come together). Enamel paints seem to be favoured for colouring but I just use Letraset markers as I use these for other fly tying purposes. The colours run a bit when I apply a couple of coats of varnish but this does give some nice effects! Or I can just varnish the blocks of colour separately to maintain a more solid effect. And its a good idea to run some varnish into the slot where the hook is mounted to beef up the adhesion.
Pretty easy to do though - once the body is done you just need to lash on a bit of a tail and sparkle and maybe some legs and away you go! The most time is spent on the bodies....
Good luck and have fun!
Andy