I have read up on this a little at DG's place but I have a few questions,

How does this work using cracking baits? etc... Like spinners and crank baits

Hows the casting?

TIA

What you achieve with spiral WRAPPING is:

1.- More fluid movement of the line though the guides,

2.- Reduces the tendency of the rod to rotate in your hand when under load.

The bait action is not altered by the position of the guides.

When set up correctly, the casting is just as good as any custom rod.  The spiral wrapped rods are even better for moving baits like crankbaits and spinnerbaits.  Most of the torque is eliminated and that  greatly reduces fatigue in the user and even reduces some of the likelyhood of rod failure- because the loaded rod isn't torqued as far (or at all) as a guides up rod.  Most people are amazed after a day of cranking with a spiral wrap.  They aren't worn out like normal.  

well what about hook sets? if the line is under the rod and in a tip guide and you set the hook it puts alot of pressure on that tip guide... The line will be only on the guide and would not bend it down ?

I have never seen a spiral setup in person

No, the truth of it is that the guides under is a (potentially) stronger and more reliable set up. In the unlikely event that you could put enough line pressure on the rod to rip guides off- the guides under are already lined up with the direction of force and can carry more weight. With guides up, they "want" to twist and rotate to the bottom. All the spiral wrap does is satisfy the majority of the physics involved. \

It would be like you holding a set of 50lb. dumbells- is it easier to hold them over your head or with your arms straight down at your side? That is an exagerated example of line pressure on the guides in each position, assuming your arms & hands were the guides.

Even when the guides are on top, the line pressure is carried by the tip top. Think of it this way, you don't see spinning rods failing all over the place from hooksets. The tip top is just as strong (if not stronger) when carrying line vs holding it up. Another consideration is drag... all the guides or tip top in this case have to do is support 3-10 lbs of cushioned pressure (rod tip's flex is very forgiving, even on heavy rods)

Ask every builder on this site (or rodbuilding.org) which they prefer and I'll bet you a 50MG that at least 8 of every 10 prefer the spiral, hands down. (and the "2" probably haven't built a spiral yet)

I caution you though, once you try one, you will want to sell all your other rods and replace them with spirals.  

On the 100:1 chance you don't like it, you can sell a spiral wrapped rod in no time flat in the flea market here.

I've heard all about you guy's bulding the spiral wraps, but can you buy a "factory" rod with the spiral wraps