The Banjo Minnow?

There was a infomercial on T.V. about fishing lures and how to catch bigger fish. There was a lure called a banjo minnow, it looked so good on T.V. because they had videos of people catching huge fish with the banjo minnow. And they gave an "incredible" offer that was to good to resist, so I bought it because it looked so good. About a week later I got it then the next day I went fishing it came with an instructional DVD on how to rig and fish the banjo Minnow. Once I rigged it I was like "wow that is so cool!" Because you could change the bait without ever having to retie your bait on! So I went fishing at Brandon oaks and I got about 5 bites but they could never seem to get the hook in there mouth. So I didn't catch anything at Brandon oaks and I have A feeling that I was fishing it wrong and the DVD wasn't really specific about how you fished it. And I also dint know what size minnow I should use. So if you have the banjo minnow can you help me out and send me a comment or a email.