When moving a boss around you never want to turn your back on them. As soon as you do you lose all your avoidance and your healer starts burning their mana faster. Assuming you don't die.
So to move the boss safely you need to either walk backwards or strafe the mob.
I'm a mouse driver which means I have to kite bosses with the keyboard since my 3 button mouse doesn't let me go backwards. Whenever I need to kite I use the arrow keys. It's not as smooth but its better than turning your back.
My mouse died on me so I did get a cheap $40 5 button mouse and my two extra buttons are bound to backing up and strafing left. I tend to go left more than right. Kinda like the reverse of Zoolander.
So what does this have to do with learning to tank kite. If you read my last post I'm working on my Kara key and I'm doing it solo. Grand Master Vorpil in Shadow Labs has to be kited.
So here I am kiting him backwards to avoid the void walkers getting to him. This is on the south pass after we already went north. For an 80 DK tank this should be relatively easy to solo, or take a dps healer if you want. This is a good boss to practice kite tanking on if you don't have a lot of experience.
Just keep moving. Never turn your back. Profit.