Every single room is different, not any one room is alike whatsoever!
Therefore, you simply have to experiment, it may take days, weeks, months but the end result is fully worth. Even when you add furnishings, wall hangings, carpets etc., things change again, and full range stats or panel type speakers will react to these added items, there's no way around it. Therefore, moderation is the key, don't overdo it, with heavy furnishings and extra damping, it will just kill the natural tones that ML stats are known for.
There's one chap that highly criticised my system just by looking at the photo of our new place. Since one panel (right channel) is more open to a corridor, he thought at once that there can't be possibly any good sound nor good bass definition. After a few visits, and these sessions went well into the wee hours of the morning, he just couldn't fathom the pristine quality and level of realism it's capable of, and that's all she wrote!
So as i said, every room is difficult to cater to, addressing it's parameters. Only the owner will ever truly understand their own room. Once you get to live and breathe in your room, you will understand the strengths and weaknesses of each component and overall how the system should be placed optimally.
As a matter of fact, the room is a component itself!
The flashlight method didn't work much according to the owners manual in our little shoe box apt... in fact the light reflection towards the centre was much more coherent. Then again in the new place, with much larger space, the owners manual flash light adjustments were spot on!
I've also noticed spikes, footers and those specialised Nordost SortFuts make an interesting change... again I would not comment if one is better than the other simply because the room interaction plays a huge role. I just stick with spikes (The supplied ones,).
Cheers, enjoy those tunes!
RJ