Here's a nice piece of work in the 3.5" Super Fry.
For the back:
4 ounces of Do-It soft formula
a shot of stabilizer
10 drops of original ccm amber
splash each of gold string, copper .015 and black .015 glitters and
a nice ball of copper hi lite

The under carriage is hand poured using a thin white pearl with a wee bit of blue hi lites and a tiny shot of blue .015 glitter. To help compliment the back color I tossed in a thin piece of chartreuse about the size of a dime....it came off the side on the inside of a bowl to get an idea of how thin the chartreuse was.
The black line was a re-melt smoke of medium intensity that had some purple hi lite in it. There's ever so little blue glitter in the smoke too. I added maybe a half an ounce of raw plastic to the smoke chunks before heating.The bait on the bottom shows the purple hi lite at the end of the belly section near where the tail begins.