How so? He's a stationary. All you have to do is advance the PID frame.
However, there's NPCs do deal with.
It's going to be my first time entering the area, so I intend on stopping the NPCs by battling them.
I need 5 pokemon. 2 party slots for Thundurus and Tornadus, one for my Surf/Waterfall user, one for my Pokemon that weakens them, and a fifth pokemon. The fifth one wasn't going to be Chatot.
IV Frame is 106, so I'm going to need to take a lot of steps outside of the grass. Not difficult, just time consuming. (106 - Starting IV Frame of 1 = 105, (105/5) * 128 = 2688 steps)
PID frame is 230. I was hoping that by doing the back and forth thing, I can easily finish the 230 advances I need, but if there's a chance of turning being 3 frames instead of 2, I'd need to get a Chatot and listen to its cry 230 times. Or get 2 Chatots and probably train a Smeargle with Surf/Waterfall/False Swipe/Spore to a high enough level where it doesn't get destroyed by a lvl 70 Landorus. I'm not one to use Master Balls...
On the other hand, if there's non-trainer wandering NPCs... Well, I'll just give up on my current Landorus and just go for a much simpler one that has IVs on Frame one.