Every hypermiler probably has a different technique for pulsing and gliding, but each of them shares at least some methods in common.

First, like this post from last year about the pulse and glide hypermiling technique from MetroMPG.com, we begin with a disclaimer,

Upfront, any discussion of pulse & glide (P&G) almost always includes a disclaimer that goes like this: this is not a "normal" driving technique; it's not particularly easy to do in a non-hybrid; it may cause more wear and tear on the vehicle; and it has the potential to drive fellow motorists crazy (depending on the spread between the min/max speeds of the pulse & glide); it may even be illegal where you live!

BUT... done correctly, in the right conditions, it works.

Alright, so now we have been warned.

Let's review a note from Wikipedia:

Fuel efficiency varies with the vehicle, but generally acceleration is most efficient at near full throttle openings ^[11] It is also important to keep the engine RPM in an efficient range, so acceleration is more fuel-efficient when up-shifting occurs at a lower RPM. Low-RPM up-shifting is easily executed with a manual transmission.

This blog over at Wordpress gives some great first-hand advice on how to use the technique:

Learning how to properly pulse and glide your way to 60+ MPG will take a little patience, a relatively straight, relatively level road where you can safely maintain speeds of 35-40 MPH for long stretches (a road with a lot of stop signs and traffic lights is not ideal), and careful attention to the consumption screen.

The first step, of course, is Pulse. Accelerate up to no more than 41 MPH (the point after which the gas engine will not shut off), using moderate pressure on the accelerator pedal. You should be able to reach 40 in six or seven seconds without “gunning it” (4.9 seconds with maximum throttle according to Motor Trend - but that’s not really good for fuel efficiency).

To glide, lay off the accelerator for a split second before reapplying just enough gentle pressure to get the blue (regenerative breaking) arrows to disappear...

You can accomplish a reasonable facsimile of this process, by the way, in any non-hybrid car with a manual transmission - pulse up to your desired speed, shift into neutral, and turn off the ignition. Do it on the highway, though, and you’ll likely end up dead, having been rear-ended by an 18-wheeler.

And,

This method consists of accelerating to a given speed (the "pulse"), followed by a period of coasting (the "glide"), and then repeating the process. The glide is most efficient when the engine is not running. Because some cars inject extra fuel when the starter is activated, this was originally best accomplished with a manual transmission.^[16] Hybrid vehicles, such as the Toyota Prius, are ideally suited to performing this technique as well: the internal combustion engine, as well as the charging system, can be shut off for the glide by simply manipulating the accelerator.

Lastly, this guide tells us:

Assume you want to average 35mph.

Start at 40mph and allow your vehicle to decelerate, in Neutral, to 30mph -- this is called the glide.

Then, accelerate back up to 40mph in the same amount of time that your glide took -- this is called the pulse.

For the more intense, glide with your engine off. This will increase your FE number dramatically while gliding in gear will reduce them as you'll be combating engine braking.

This technique has been proven many times over to be an effective way to increase mileage. But, your mileage will vary based on traffic and other drivers. Other drivers will get quite pissed off at your pulse and glide, so use your best judgment.

Pulse and glide may be the most important hypermiling technique. It also has the potential to be the most dangerous and so it should only be performed under the right conditions. Use common sense, be courteous to other drivers, and remember that saving some gas is never worth risking anyone's well-being.