When he was a young man, Hobie Alter had a clear vision of his future: He didn't want a job that would require hard-soled shoes, and he didn't want to work east of Pacific Coast Highway.

He succeeded.

The son of a second-generation orange grower, Alter is credited with innovations that allowed people who couldn't lift log slabs to surf and those who couldn't pay for yacht club memberships to sail.

Share your memories: Hobie's contributions to SoCal culture

Known practically everywhere with a coastline or a lake simply as "Hobie," Alter developed the mass-produced foam surfboard. He later popularized sailing by inventing a lightweight, high-performance catamaran.

He died Saturday at his home in Palm Desert, according to an announcement posted on http://www.hobie.com, his company's website. He was 80. The cause of death was not disclosed.

Alter was diagnosed with cancer about five years ago and since then had experienced serious health problems, said Paul Holmes, author of "Hobie: Master of Water, Wind and Waves," a 2013 biography.

A self-taught design innovator and entrepreneur, Alter was a reluctant businessman who wore cutoffs instead of suits and was guided by his imagination above all else.

"I'm making money producing things that give me pleasure, doing exactly what I want to do," Alter told a reporter in 1977. "I guess I'm really lucky that way."

There were only several hundred surfers lugging their heavy wood boards into the waters of Southern California in 1958 when Alter and then-partner Gordon "Grubby" Clark perfected the delicate chemical process of making rough-cut polyurethane foam blanks that could be custom shaped in less than an hour.

Initially dismissed as flimsy toys, Hobie's lightweight boards caught on. In less than a year, wood boards that had been used since Hawaiians invented the sport were obsolete.

Alter's timing couldn't have been better. The following year, the movie "Gidget" introduced the nation to a fun-loving California subculture. Interest in the sport surged, and Alter — the so-called Henry Ford of surfing — was there to provide the vehicle.

Soon his Dana Point workshop was pumping out 250 boards a week and became the epicenter of California's burgeoning surf culture, a place through which a generation of top shapers practiced their craft.

Photos: Alter through the years

Alter licensed the Hobie name to new surf shops in San Diego, Hawaii, Peru and on the East Coast, and sponsored a team of professional surfers, including Phil Edwards, Joey Cabell and Corky Carroll. All got their names on "signature" Hobie surfboards — another business innovation that spurred sales.

The Hobie brand dominated the surfboard business into the 1970s. Today, the foam-core board remains the standard for an industry Alter arguably helped create more than half a century ago.

"He is one of the pillars on which the sport of surfing is built upon," said Steve Pezman, a surfing historian and publisher of the Surfer's Journal. "He was enamored with inventing things. He'd get interested in something, see how it could be improved and go make a better version of it. Once it became repetitive, he moved on to something new."

In the mid-1960s, with his surfboard business booming, Alter turned his restless imagination to a new hobby — sailing.

As with wooden surfboards, Alter discerned an inherent problem with his 600-pound catamaran: It took at least four people to haul it to the water. Sailing shouldn't be that hard, he thought.

After more than a year of experimentation, Alter unveiled the Hobie Cat. The 14-foot catamaran was light enough for one person to carry and small enough to tow or even strap onto a car roof.