Re: Cracking the whip
Larry has nailed it.
As the casts get longer, the delay between the backcast and forward cast must be longer. A newbie keeps the same timing and as you try to cast a bit further on the forward cast, you start too soon. The crack you hear is exactly like the crack of a bull whip.
As Larry says, you can put you right foot back (for a right handed caster) and this 45 degree stance will allow you to see your backcast. Another way to see you backcast is to cast side arm.
Both will work. Since you don't have the muscle memory give you timing cues, you need visual cues to tell you how long the delay should be.
As you practice repeat the back and forward casts without changing the distance to reinforce your muscle memory on how it feel to cast that amount of line. We want your body to learn what degree of rod bend and rod resistance = what amount of delay. Then extend line and practice at that length so your body learns to equate that amount of rod reel to that amount of delay.
"Discovery consists of seeing what everybody has seen and thinking what nobody has thought"..........Szent-Gyorgy