Here's how I've always run my special teams:

PP1 = 1st Line+1st Pairing

PP2 = 2nd Line+2nd Pairing

4 Man PP1 = 1C+1W+1st Pairing

4 Man PP2 = 2C+2W+2nd Pairing

PK = 3C+3W+2nd Pairing

PK2 = 4C+4W+3rd Pairing

3 Man PK = 1C+1st Pairing

3 Man PK2 = 2C+2nd Pairing

This means special teams won't grind down half of every line if there's a string of special teams in a row.

Also I don't like having the same guys on my 3 Man PK unit that I do in my regular PK unit simply because I don't want to take a penalty to go down two men, and my three guys are already dead tired from killing half of the previous penalty.

This setup seems to keep all my players their freshest, and makes sure in any situation I have at least one fresh unit I can send out.

Also when I play I usually send out 1st line, then 3rd line for the next shift, then 2nd line, etc...

This way I don't send out my first two lines and then end up with 6 fatigued players if I get a powerplay. I always try to keep at least one of Line1/Line2 and one of Line3/Line4 fresh so I always have a unit I can send out for a powerplay or penalty kill.

I overthink line management to a ridiculous level.