Mackay first started manufacturing and designing his own skateboards to sell to local skate shops. Drawing on woodworking and sales skills from his father, he was determined to fulfill his dream of creating his own skateboard brand. The concept of creating a plastic skateboard when Mackay began experimenting with different shapes and types of boards. He used a variety of materials, such as fiberglass and carbon inserts, as an alternative to timber. The durable signature and responsive characteristics of the Penny board was created by testing out plastic prototype boards. The strength and natural flex of Penny's plastic formula is what sets Penny boards from other types of plastic skateboards.