Steve and all who may be interested,
Here is my attempt to show you how I tie my version of the wiggle baitfish for perch.
Ingredients:
Mustad C49S size 8-6 hook ( find the shape of this hook is just perfect for the job)
4.5 – 5.5 mm tungsten bead
30-40lb mono
Fine mylar tube, colour of your choice
Craft fur or similar for the tail (I suggest white since you can colour it easily)
Long chenille for the body (Again, white is probably the most versatile colour)
5-6mm stick on eyes
Epoxy ( I prefer 30 minutes epoxy since it gives better penetration hence more weight for building up the head)
Holographic Flashabou for the side stripes
The tail:
Cut a few inch off the mono and fold it half.

Measure the length of the tail you want to make and cut the mono accordingly. Do not forget the imitation of the caudal fin will add some extra length too. Using your strong tying thread ( I use power silk) form a small loop at the bend of the mono.

It does not need to be massive but big enough to allow for free movement of the tail. When you are done, few half hitches and a dab of superglue secures the wraps.
Next step is to cut the mylar to length and cut the double end of the mono accordingly.

Then melt the end of the mono to form a little flat end.

This is to prevent the tail to slip off accidentally. Maybe a little bit OTT but I like to do it this way.
Cut two small matching clumps of craft fur then place them to each side of the mono.

It is important that the tail end loop ( the tail end connector loop) is in the horizontal plane and the craft fur is in the vertical.
I have found the horizontal tail end connector loop gives better wiggling action. Once the craft fur is tied on, drop on a few half hitches and secure the thread with a blob of superglue.
The next job is to slide on the mylar and lock both ends in place, roughly as you see in the picture.

Colour the tail by brushing the marker pen into the fibres. This gives a nice effect especially if you use multiple colours.

The tail is now done.
The body:
Stick the tungsten onto the hook, again a little dab of superglue never hurts. Tie in a short piece of mono and slide it through the tail end loop and secure it to the hook. Do not forget, tail end loop will stay horizontal and the hook end loop shall be vertical.

Apply superglue to the thread.
Once the superglue has cured, starting at the tail tie in the long chenille. You will only need a few turns of this.
Remember when you are moving towards the eye always brush the fibres back. Moisten your fingers to make this process easy.

Finish the chenille by tying it down just behind the bead and apply as much pressure as you can. Superglue the thread before you throw on the last turns and finish the process off with a few half hitches. The hard bit is done, at this stage you have an almost perfect baitfish imitation with a nice heavy head.

If you fancy you can probably just give it a try as it stands
, I am sure it would catch. However, if you wish to take it further then a small amount of superglue on both sides of the head and you are ready to stick on the Flashabou.
The reason I do it this way is because the flashy stripes stay perfectly in line with the center line of the body and run flat along the sides. I have tried to tie 'em in the past but they always stuck out.
Once the Falshabou stripes are in place stick on the eyes.
Mix up a small batch of epoxy.

I use 30 mins epoxy and never try to build up the head on one go. Take your time and use 2-3 layers. The result will be way better and pleasant to look at.
After the first layer of epoxy:
Sorry lads, I forgot to take a pic after the head was completed but I am sure your imagination can finish the rest. - > corrected
I have now taken some time and took a pic of the finished fly:
I hope this fly will bring you as much success as it has given me in the past year!
Pete