These really do stiffen up a floor/ceiling..better than noggins IMHO.

cut lots on a circular or handsaw and whack em in everywhere. The more
the better.

The great advantage is they can be a little bit inaccurate unlike
noggins, which really need to be mm perfect to work.

I had assumed soild noggins were the better choice? Aren't noggins
convenient to position the joints between plasterboard sheets under?