How much overhang is ok between a speaker base and the stand top plate?


This thread extends another I posted about "mass loading" stands.
As I mentioned in those threads, I’m choosing speaker stands for my Salk SS 6M speakers. They measure:

20” H x 9 1/8” W x 14 5/16” D

There are many options for speakers stands, but the choice is complicated by the size of the speaker’s width and depth.

Many stands feature a top plate that is 6" x 6" or 6" x 8" or 7" x 7" etc.

On *any* of these top plates, my speaker would hang off the sides and front/back by at at least 2-3 inches.

For example, I’m considering Target stands but am not sure if it’s worth spending good $$ on a stand if there is this amount of overhang.

Seeking opinions about the "overhang" issue between speaker base and stand top plate. How important is this for the sound? How much overhang is too much?

And if it was necessary to have a top plate made locally to go along with the stand, would I just affix it myself? Have it welded on? I didn’t want this to get so complicated.

Thanks for your opinions.
128x128hilde45
@twoleftears That might be good. If I decide to go with MDF, they seem the way to go.
skylan stands are solid and stable and come with excellent iso bumpers for the top plate.
you can also fill the columns (i used cat litter with excellent results).
much preferred to the mass market metal stands.
a couple inches of overhang of the speaker panels is not an issue. just make sure they are centered and the center of gravity of the speaker is over the top plate- left to right centering is fine but usually the center of gravity of a speaker is more forward because of the mass of the woofer magnet. in other words it’s better to have a little more overhang in the back than the front for front / back stability and resistance to toppling.  
Maple is a very dense wood and there's no need or way to fill them to deaden them even more, like you have to do with hollow metal stands. Any fill you use in those stands will "sound" different than each other.

What I did with my Timbernation stands was to use some Les Davis constrained layer damping pads to rest the speakers on and they made a slight improvement. I would imagine using something like Isoacoustic Gaia footers would work even better.

All the best,
Nonoise
I have JM Reynaud Offrand Supreme V2s in my 2nd system. They are 17H x 17L x 10 W and hand 4 3/4 inches off the back & front and 1 1/2 inches off the sides of the accompanying stands. Zero sonic issues