So, I did a trial run. Photos are below.
Fish was 14 lbs., 23 inches long and had a girth of 18 inches.
i will say you need to REALLYbe ready and have everything set up before you catch the fish.
For the shot of the fish, I used a camera holder and did it by voice control. No problem here- same as what we used to do.
For the length I used a metal measuring tape. It was more rigid and stayed in place. Plus bigger numbers. It was difficult to eyeball an exact length because the tape was under the fish. Plus, does not show up well unless you enlarge the photo.
I did the girth with a fabric tape measure. The fish flopped when I put the tape under it. First photo my finger was in the way. Second photo was ok but still tough to do since you are measuring, holding the tape and then taking a photo.
All of this would have been easier with 2 people.
So, can it be done-yes.
But, I can guarantee most fishermen will find this cumbersome. Some will find it very difficult. It’s something you will need to get used to if we adopt it. Not easy.