No need to question, I'll tell you how I do it here :)
First, as a note, I have enough focus AAs for my DoTs, that they're all doing the extra 8% damage, and my DoT AAs are complete (with the exception of Destructive vortex, missing the third rank). With this, I can kill most with one round of the 5 main DoTs (I skip the 2.5+ minute DoT, XXX Chill, it takes too long). Also, with twincast running, I can take out a yeti with just one round of Sunflash/Horde/Overwhelming.
When I start, I gather 6, and start kiting, throwing on wolf form, and then IT, which gives me 18 doubled casts. Since I need 3 DoTs/mob, that will kill 6 mobs, how convenient ;) I cast Lesson as I finish applying DoTs to the 3rd mob. Once all DoTs are on, I also throw in Storm Strike/Fire Storm as it refreshes (as well as while gathering the six). I may have one or two which need one more dot to finish, so I throw on a Sunflash. Once all 6 are dotted, I cast the mana regen bear, so that helps as well. For the rest of the lesson, I'm recasting the mana bear whenever it refreshes.
When the six are down, I have just enough mana left to kill another with twincasting, so I use the spell form and take out another. After that I med to near full, taking advantage of fast regen, and then kill one normally (the full round of 5 dots). By then, spell twincast is back up, so I do one that way, med up, and now IT is refreshed, and I start over. Rinse and repeat, and viola, 20-24 dead yetis in a Lesson, without porting out to PoK :)
My question with the quinting is, looking at the base damage of the quint spells, it seems like I'd have to cast it well over 100 times to take them out, which seems like an awful lot, not to mention I wouldn't have enough mana to cast them that many times.
Edit - Forgot to mention, I don't think either method could go much past 25-26 per Lesson, due to lack of availability of mobs. Though, with porting out to regen, you could wait for respawns, so that would help.
Edited, Dec 29th 2017 2:48pm by tatankaseventh
Tatanka Wolfdancer, 106 Wood Elf Druid, 7 x 300+ Master Artisan, 7 maxed trophies :)
Anaceup Mysleeves, 105 Erudite Mage, 2 x 300 Master Artisan
Snookims Whinslow, 105 Erudite Enchanter, 2 x 300 Master Artisan
<Inisfree>, Tunare (Seventh Hammer!)
Tatankaa (95 Inquis)/Urkell (38 Conj)/ Seanthornton (24 Pally), <Inisfree> Freeport server (some other server now)