How long should I make my double minnow rigs and how far should hooks be apart any thoughts would help.

If you want to cover more of the water column say around bridge pilings, hooks about 24-28" apart. If you're fishing deep water with fish holding near bottom, most people have the hooks about 18-20" apart. Also depends how you make the minnow rig. With one hook on bottom, then sinker, then second hook, about 20" is good. The length of the top hook leader makes a difference also. Too long a leader and the minnow tangles the line easier or twists the line. Leaders about 4-6" have worked best for me. Some people rig the top hook like a drop shot, but I don't like that setup. When a crappie tries to inhale the top minnow, the line prevents the minnow from getting deeper into the mouth. Crappie can spit it out very fast; usually before I can set the hook. Just my

Thanks for the info I made my top leader shorter than that I will go back and make them longer

I usually to 1.5 - 2ft

A short leader 2-3" isn't going to be a problem.