Knowing how to keep your pipe lit is entirely irrelevant when it comes to the DGT. The entire purpose of DGTing is not to give up on a pipe that is difficult to keep lit, but to intentionally delay re-lighting to create a new flavor experience.
If you are unfamiliar with the term Delayed Gratification Technique, or DGT, it is simply this: light your pipe and smoke part of it, but leave at least half a bowl unsmoked (in my opinion). Then put it down, allow it to go out, and re-light it again some time later.
I always like to quote Kinky Friedman on the topic. Although he was writing about cigars, the principle stills applies.
I was on my second cup of coffee and slightly past the midway point of the cigar I'd lit after I talked to Bill Dick. I didn't usually like to smoke a cigar past the midway point. I liked to store them for a while in the wastebasket and fire up the remaining portion at a later date. In the manner of a fine wine, you had to let a half-smoked cigar age a bit. Had to let it breathe. A lot of people didn't understand this, but I didn't understand a lot of people.There are two good reasons to DGT a pipe, and neither of them have anything to do with having trouble keeping the leaf burning: one; you are interrupted by unavoidable business during the smoke and have no option but to put it down and re-start it again later, and two; you do it because you enjoy it.
I smoke as many as ten cigars a day and I expect to live forever. Of course I don't inhale. I just blow the smoke at small children, green plants, vegetarians, and anybody who happens to be jogging by at the same time that I'm exhaling.
You have to work at it if you want to be a good smoker. Especially today with all the nonsmoking world constantly harassing you. It's enough to make you drink. I poured a shot of Jameson Irish Whiskey into a third cup of coffee and I sat down at my desk.
I thought of what Charles Lamb, the renowned British essayist, had said when someone asked him how he could smoke so many cigars and pipes. He said: "I toil after it, sir, as some men toil after virtue." Not bad, Chuck.
(excerpt from A Case of Lone Star)
I can honestly say that I fall into both categories.
So one may ask: how long should one allow the pipe to sit cool and fallow before re-lighting it? The answer is entirely subjective and at the whim of the individual pipe smoker. If I am going to DGT a pipe, I personally prefer to let it sit and stew in its own juices for several hours, often overnight.
I have no doubt that the DGT is not for everyone. It has a way of dramatically increasing the robustness of even the most robust of blends. I would especially warn all smokers that if you are not a terribly huge fan of Perique, you absolutely do not want to DGT any blend with an appreciable amount of Perique. I, on the other hand, often add extra Perique to various blends and have DGT'd them all in my quest for the Pan Galactic Gargle Blaster of pipe tobaccos.
Give it a try if you haven't. You may be pleasantly surprised at the fresh (and I use that term figuratively) dimensions of flavor that are introduced. Or, you may be thoroughly disgusted. But do not make the mistake of thinking that it has anything to do with difficulty in keeping a pipe lit. It is simply another technique available to the pipe smoker to allow further exploration of the flavors and smells inherent in any given blend of tobacco.