Start around the couch -- you’ll need to sit there anyhow for the first, balance, phase of Trueplay -- then circle the main area slowly. Get back to the couch with say 30-35% of the time left and wave the iDevice around at about ear height along the couch. 

Trueplay EQ is biased by how long the iDevice spends in different locations, but on the other hand if you don’t wave the iDevice about enough TP will abort with a complaint that you’re not moving sufficiently. Strike a balance and you’ll be fine. 

Why not try both, and see what suits your preferences?

Last time I tuned the room, I was walking around the dining room (it takes a good portion of the Trueplay available time) and wondering why I was doing that since there will be zero ears there listening.   

So I am going to just concentrate on the three walls that are close by and just maybe a short wave at the left dining room space and then spend time at the couch listening areas.  

My concern is how Trueplay treats a room with an extended space to the left and otherwise a good room with close walls and a flat ceiling.  I’m guessing the surround won’t work.   

I’d agree with your supposition, but I’m not sure, which is why it seems much easier to try it both ways, and see which result you prefer in your ‘normal’ use. 

The right side of the Arc is about 4 ft from the right wall and 22 feet from the left wall.   I am going to try this first…...when I tune with TruePlay I am deemphasizing the left wall and emphasizing the listening area - walking like the red arrows.    Previously I walked about 3 ft from the perimeter walls (it took a lot of time to walk the left side 

Also interested in this, as I have an ‘L’ shaped room. When I did the trueplay setup on the Arc, I only walked the ‘section’ or ‘zone’ of the room (as above) that I would be using the Arc in, not the whole room.

I had assumed the first part of trueplay when you place the iPhone in the seating position is for the ‘Home Theater’ mode, and the second part when you walk and wave is for the ‘music’ part.

I tried as in the red arrows and it sounds great!