Thanks for the info. My thinking about the uses for gauge wheels on a box scraper is for spreading gravel. What I'd like to do is pick up a box of gravel, float the 3ph, drive forward dragging the gravel, and then tilt the box up to start spreading the gravel. I have a hydraulic top link.
I was building up a pad for a construction trailer and a load of gravel was more or less spread on the pad by a dump truck. I did most of the leveling with the scraper and had to ride the 3ph a lot. However, I ended up doing most of the final spreading with the back of the loader bucket, and then went back to the scraper to finish and compact the gravel.
If there are other approaches, I'd be happy to hear of them. I just figured that gauge wheels might make a scraper more useful for final spreading. My scraper has a fixed rear blade. I have heard that ones with hinged rear blades are better for spreading. However, all things considered, I got the job done, and it was pretty enjoyable work. I just keep searching for easier ways to do things.
The idea with the snow blower is similar. There is a time before freeze up and after thaw when my gravel drive is sodden. The skids on my blower just dig into the gravel, and then the blower picks up a lot of gravel. During these times, I have to use my loader for snow removal, but loaders aren't great for dealing with very heavy snows. Attaching wide plates to the skids probably would be an easier solution, but I figured that if I got some wheels for the box scraper, they might work for the blower as well.