For both 10 and 25 (10 hasn't been completed yet but 25 has) I always lay a consecrate right outside of the portal in the general direction of the healers. Also don't bother waiting for the whelps to spawn to have it down, just learn the timing and have it down before. If you just lay it when they spawn the tick is delayed further than necessary.
Human reaction time and server lag, in addition to the 1 second wait can be detrimental to picking them up. If you have it down already, it will tick anywhere from right away, to 1 second after they appear, which is going to be much more reliable.
Mind you, on the occasion we run with 4 tanks in the fight (our first kill was with three), if one of our warriors gets to the adds relatively early, they will obviously have control over them. It's generally agreed upon that I then just taunt the adds one by one (three by three technically) and hold them to be AoE'd next to the second drake, while he runs around picking up the newly spawning adds as he waits to pick up the third drake.
EDIT: One issue with a warrior tank, is that they may pick the adds up better, but control is harder for them to maintain. Also since the first portal spawn can coincide with a lava wall, I've seen the adds get out of control because there is no "static threat zone" while they are dodging an inconvenient wall.
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