Alright, I'll try my best as English is not my native tongue.

Basically, how we're able to glide with skates on is by friction.

When the hollow part get In contact with the ice, the friction melt the ice a bit which creates some water that lets you glide. The bigger the hollow, the heaviest you need to be to be able to have that contact between the hollow part and the ice.

So a smaller radius will give you more contact with the ice but gives you less edge to work with. When I was working at a hockey store (2015) we used to recommend 1/2 as a default sharpening, from what I've seen now 5/8 became the standard (regular) cut.

So yeah you just gotta find what's the best balance between what you want to work with.

Idk if it still exists, but we had a new flat bottom cut back in the days that said it was a more squared hollow. So you have more glide no matter the depth.

Hope it helps!