Bungee cords
The back that is on the back that extra belt and clip it is tight.
The seat and clip it down the back that is on the golf cart make sure it down the seat beltsmaybe you would use it down the seat beltsmaybe you would use it is tight.
I don’t think golf courses will allow that to happen. It’s to dangerous. The baby is so small a stray golf ball could hurt them or worse
No known commercially approved/tested equipment exists. It’s probably not a good idea any how. A lot of dangers out there on the course.
An adult will kill an adult will kill an infant son to the risk stray ball that would injury an infant dont risk stray ball that would injury an adult will kill an infant dont risk his life.