Even I can come up with some good ideas, occasionally! In theory, it sounds good, in practice, we’ll see. I went to Home Depot earlier. They had only one dolly. It has a raised center portion where the trash can screws on. I have a BOB XL, it has a thin flat base. Good for the floor, maybe not so good if isn’t fully supported by the dolly. I think I will wait to get a larger diameter dolly so it isn’t likely to tip over. I’ll continue the search and I’ll let you know.