Need help with MNK class

[Almalexia]

This is for generic boss mob:

Boot or DK, depending on flank > Twin > Demo > Frac > DK > True > Snap > Boot > Twin > BfB/IR > Demo > Frac > ToD > DK > Twin > Snap > HF

Repeat using BfB/IR whenever they are up, unless deliberately saving for LB.
Frac/Demo every second rotation, reapply ToD every third.
If more than one MNK present, use Boot instead of DK if debuff will last another rotation. The DK debuff is universal and does not stack.

Bonus tips:
If you know you will have to run away or the mob will teleport, apply a fresh Demo/Frac/ToD.
Auto-attack is a big honkin' deal, so stay locked on and facing the target as much as possible--unlock and cut through mobs only when necessary to survive. Remember: the rear/flank bonus applies as soon as you use a skill, not after the damage appears.

[Akumara]

Alma, Are you throwing in ID as well and on fights where your stun isn't needed, are you using our non-charge stun for damage?

[Almalexia]

Alma, Are you throwing in ID as well and on fights where your stun isn't needed, are you using our non-charge stun for damage?

In this post, I reasoned against using ID in favor of sticking to MNK skills. I have added Fracture to my rotation since then, so there is less opportunity to work in ID.

For Steel Peak, if I know I can stun something (dark helots, golems, plumes, etc) I will spare it for stunnable targets. Otherwise I will use it for damage alongside Howling Fist.

[enil]

In this post, I reasoned against using ID in favor of sticking to MNK skills.

Your maths in way too simplistic and disregards too many system mechanic to convince me that ID is inferior overall.
You can't compare base just potencies when Bootshine has 100% crit. At 16.6% crit rate on average Impulse drive outperforms bootshine, this is not difficult if you include internal release uptime.
You can't even do the Twin/Boot rotation if you don't have above 1.99 GCD or else twin snakes will drop. You can slot in a third impulse drive at 1.71 GCD as well.
Your rotations do not include ToD, Fracture - if your GCD is more than 1.49s then everytime you want to cast one of these spells (every 18 and 30 seconds) you have to drop a Bootshine/Truestrike, whilst a ID rotation only substitute an ID for this skill.