They are top heavy and fill fall out as soon as the turner gets onto the side position. You will need to get goose egg rails, or convert yours. The rails they sell are nothing but some hardware cloth attached with washers and nuts to the rail itself. You can only use 3 rails in the turner if used for goose eggs. This also limits you to 3 eggs per rail. GQF sell the rails and they show 4 in their picture in the turner itself. I think they have never incubated goose eggs, because 4 rails will only fit duck eggs. BTW all waterfowl, ducks and geese, incubate best laying on their side. Quite different then chicken or quail eggs. They also need to be misted daily and require much higher humidity during lockdown.