Not knowing the body of water - type, clarity, etc. - it's difficult to know, but it sounds like you were doing it right. I would just say that an on/off bottom retrieve with your jig is probably not the best way to go. I'd use the count down on the cast and a slow, steady retrieve back to the boat. Some other night fishermen may shed more light on your tactics. I think the main problem you were having was location, more than presentation.