I agree with Mo' Money. My rig gives me a about an 2ft varience between the two hooks. Some may say thats a lot but it works for me. What I do in setting my depth along with staggering the depths of my rods is watch and see which hook I'm catching the most fish on and make the necessary adjustments. This seems to really get on the fish much faster. Speed wise I alway start as slow as possible. Trying to never go any faster than .6mph. In the winter I troll much slower trying to never pass .3mph.
But if all this fails ask someone who had found them. Lol