If you use a torch, stop. Just use a bic and hold it an inch to an inch and a half away from the bowl. Make sure you’re rolling side to side at a steady fluid pace. When you feel the vapor become slightly warmer than lukewarm (sorry I am terrible at any sort of identifying descriptions lmao) take the flame off. Keep slowly rolling side to side to get a nice finish on your hit.
Key to getting a long concentrated hit? The rolling, as well as better breathing and inhaling techniques. Exhale the air out of your lungs right before you hit it and inhale and then inhale slowwwwwly. Take your time and stay steady. Keep a’ roll in’. Watch the smoke fill the bowl and milk it in those spots for a split second here and there. Just make sure you’re not hitting to fast and as I said, my trick is breathing all the air out of my lungs before I hit