We use this creature as a mobile hunting/taming base.

Just a platform saddle, then some other platforms for Argys and other birds to land on, some crates to carry berries, kibble or material for a quick taming pen.

If taming smaller Dinos, also build ramps for them to get up or set the bronto on follow and carry your tame home with a Quetz.

If taming taming bigger creatures, ride them home with the bronto on follow or set your tame on follow and ride the bronto home.