Looks like a nice job, nice to have the material and the tig. After making a few here's what I think if you make more. If you use it the water you have enough holes but a bigger diameter would work better. If you use it out of the water there might be enough holes(???) if the sand is super dry. If the sand is even a little damp it's going to take alot of shaking to get the sand out. Even in dry sand it gets damp as you get deeper.
My water scoop works great, the watery sand just disappears through the holes, but my sand scoop needs the damp sand issue addressed. As I remember the water scoop is 7 or 7 1/2" wide. I don't have a picture of my dry sand scoop. Rob