Help me understand odd u-joint drivelines

I understand drivelines with even numbers of u-joints: u-joints out of phase with each other cancel out the sine wave of power transfer and equal a smooth running driveshaft. Cool. I probably worded it wrong, but the math makes sense to me.

However, there exist drivelines with odd numbers of u-joints and that makes me headscratch. Some of these use a double cardon joint and some use a single u-joint. To me the double cardon driveshaft, like in a lifted jeep, would have the double joint cancel out the sine wave between the input and output joints. However there is then another single u-joint at the other end of the shaft. Wouldn't that create a sine wave that isn't canceled? The other one that confuse me is the single u-joint system like one would find in a torque tube suspension. As the suspension travels the u-joint "bends" and there is nothing to cancel out that sine wave. Wouldn't that make the car really vibraty and bouncy? 

If the torque tube just has 1 U-joint, it either has to be set dead straight (no sine wave) or be complemented by something flexible like a Guibo joint at the other end (flexes in a sine wave and cancels the U-joint).   I don't know about the 3 U-joint setup, unless they split the wave cancellation (like one at 2 degrees and the other two at 1 degree each)  Then again, if the truck is tall enough to need a double-cardan, the steering is sufficiently out-of-whack, and the tires are tall/out-of-round/out-of-balance enough you won't notice the drive shaft.

In reply to buzzboy :

To address the torque tube first you nailed one of the reasons they are all ancient, Because of length, low speeds, and limited suspension travel the pulse was not super strong in the beginning......As we got faster and more compliant it was. The 3 joint driveshaft needs to be looked at as two 2 joint shafts. If the front 2 ujoints are in phase with each other, and the rear 2 are in phase it works.