OFFSET scope mount?

[tootall]

Asking for a friend.

A buddy of mine now has a serious vision problem (Macular Degeneration) in his right eye.
He has always fired from the right shoulder, with his R eye, but can no longer do this.

I suggested he learn to shoot from the L shoulder if he needs to use his L eye now but he cannot/will not do that.

He had an offset scope mount arrangement built that puts the scope about 2 or 3 inches to the left of the barrel.
It sort of works for him, but it has the effect of lowering the Line of Sight as compared to a regular set-up.

I did some sniffing around and found these threads:

https://www.accurateshooter.com/optics/off-set-scope-mounting-rai/

https://www.buckmasters.com/Magazines/GunHunter/Articles/ID/115/Sure-Cures-for-Wrong-Eye-Dominance

The second link shows what appears to be a multi-part setup. Pic rail, 45 degree extension, and regular Pic system rings.
Has anyone tried this, and is it durable?
This looks to be on an AR-15, and buddy wants to use this on a .338 WinMag!

TIA.

 

[trevj]

That second link's set-up looks like it would work reasonably enough.

Proof would be in the test though.

All I can think of otherwise, would be a custom offset adapter that would allow the stock to be used unmodified, essentially just setting the scope in front of his good eye when at a natural, comfortable aim position.