I worked with a guy that smoked a pipe quite regularly. His Time Management was fairly consistent. He would step out of the office with his pipe already loaded, fir it up, get in a 15 minute smoke, then tamp it out, slide his pipe back into his pouch and go back in for a few more hours. He did this 3 or 4 times a day. I can only imagine that he started with a full bowl, and just put it out after his time was up, scraping just the top coat of ash off each time, since I never saw him empty the bowl completely unless it was lunch time. Maybe to some that would be a hassle, but I find that when I want to step outside and get away from work for even 15 minutes, a half-bowl is better than no bowl in the essence of preserving my sanity.
I'm still learning, and probably will until I either stop smoking or die. Same with engineering. There's something to say for slowing down. I love the process. Selecting which blend I want to smoke, pulling out a bowlful, smelling and appreciating the aroma for what it is as I do. Laying it out to dry, and attempting to learn how long is long enough without losing to much of the aroma that made me buy it in the first place. Packing my bowl with the gravity method, puffing regularly to make sure it's not too tight, or so I think. Then lighting my match letting the sulfur dissipate, and charring the top. Tamping down on it a little, making those curled up, fringed ribbons lay down, then strike up another match and light the whole top again, immersing myself in a cloud of smoke. Then I kick back on my porch, pipe in hand, dog at my side, cool drink in my other and listen to the frogs and owls until I've smoked it up. I still get a gurgle once in a while near the bottom third of my bowl, but I'm slowly caring less and less about it. All in all, it's quite calming and I love it. Annoyances may persist, especially like many of you have said with switching blends and learning what it takes to make that one smoke the best. Once you figure it out, there's only one bowl left, but that's just the sweetest part about it. It's like making a new friend that you never really figure out until he moves away. Then someone new moves in, and you get to start all over again.