Post by greywolfsage
For fire you have two controlled DoTs;
Living Bomb and
Glyph of Frostfire.
For Living Bomb, you will certainly want it to fall off first, so it detonates.
With Glyph of Frostfire, however, you will want it to tick as long as possible before refreshing.
This DoT you want to make sure not to let fall off, because it is a stacking DoT and you waste your time and DPS by having to restack to 3 for the most damage.
For instance, Frostfire Bolt's unmodified cast time is 2.5 sec, so you would want to start casting with maybe 4 seconds left on the DoT. This assumes no latency and gives the Bolt time to travel.
As you begin to get more haste you can let it tick out a little longer, just remember to account for travel time and your latency, so that the Bolt hits before the DoT finishes.
Ignite just keeps adding to the damage it deals when you crit again, and since you only apply that DoT when you crit, stacking that stat is the only way to really make sure to reapply it. Pyro's DoT also relies on this, from Hotstreak, and Combustion just aint gonna happen.