Complex sentence: Aside from his billiards playing career, he founded a lucrative sporting goods manufacturing business, and was both an oil company investor and director, and a flower and fruit farm operator and horticulturist, originator of the eponymous Spinks cultivar of avocado.
Split into simpler sentences: Aside from his billiards playing career, he founded a lucrative sporting goods manufacturing business. He was both an oil company investor and director, and a flower and fruit farm operator and horticulturist, originator of the eponymous Spinks cultivar of avocado.