Thanks for the info Diemai....
I think I found the discussion you are referring to. Didn't realize it was so scientific but it all makes sense.
I'm going to start out with just pre manufactured bodies that I will by on line along with the bills, eye screws and so on. I am not going to try to make a neutrally buoyant bait at this point, I will be happy if I will be able to get one to run straight and true.
Your method sounds easy enough, but I'm sure I will get some frustration due to the fact I'm a perfectionist.......