When painting the lures it might be an idea to go for " Metallic " colours. Pink, red, hot orange and the like. Before applying the final hard coat you could apply some glitter fleck from the likes of a ladies make up shop.
A brushed on epoxy resin or sprayed on clear coat would be good to finish which can be done with an airbrush.
If you know someone who does wood turning, get them to turn you some plugs out of hardwood and try to achieve a point at the rear end. Another useful idea would be to add a second trailing treble tied to the first with maybe some Salmon backing - just a thought.
I would imagine, as you say, if you size the lures correctly that you would in fact be able to utilise these quite effectively on a Spey line - must give it a try.