Re: Cracking the whip
I think what you are experiencing is caused by not delaying the forward cast long enough for the back cast to complete. You might try turning your head and watching the back cast, as it completes, then start the forward cast.
Hopefully one of the casting experts on this forum will see your question and provide better advice.
I'd highly recommend getting a little casting help from your local fly shop. You will be amazed at how fast you will improve with some hands on help from a professional.