This is my portable handgun version of the standing benchrest used by seasoned big-bore rifle shooters -- gunsmiths at Holland and Holland regulating .577 double rifles, that sort of thing.
I have a miserable time with my eyes and glasses shooting from rest at standard table height, as I am seated all scoonched forward to get my head low enough to see the iron sights over the rest -- and in that position, I cannot keep my front sight in focus.
So I built this thing out of plywood scraps and a bit of 1X2 and 2X4. It is 22 inches by 20 1/2 inches by 20 1/2 to the top of the rail. The 2X4 both stiffens it and provides a surface to clamp the pulpit to the bench if need be. (We get serious winds here.)
Today was the trial run, and it worked out great with a Glock Model 40 and the Blackhawk.
When shooting 10mm and .41 Magnum it makes for a mighty loud sermon.
It was a good range day. I also shot the Remington Model 8 in .30 Remington with cast bullet loads that it liked, and the Model 1873 Uberti in .44 W.C.F. using the late John Cort's Accurate 43-215C bullet, 10 rounds over 36 grains Old Eynesford FFg, compressed, and the rest over 16 grains of 2400.

good idea, have the same problem when shooting off a bench

I just don't like to sit and shoot. I like to stand with medium bores and up. Works well for handguns also. Old eyes and glasses are the pits!!!

You got that right!