Learn about the team behind Portside – a full-service agency helping outdoor, adventure, and fitness brands grow through strategy-led marketing.
Portside was built for brands that move people – literally and emotionally. From our roots in the marine industry to our expansion into outdoor, adventure, fitness, and experience-driven verticals, we’ve always believed that great marketing is more than just promotion. It’s about aligning strategy, storytelling, and systems to drive real business growth.
Why we exist
Too many agencies focus on tactics. We focus on outcomes. We launched Portside Social to fill the gap between performance marketing, brand strategy, and lifecycle execution – delivering full-funnel solutions for ambitious brands that want more than just noise.
Where we work
We’re headquartered in San Diego, California – but our clients span the U.S. Whether you’re running a local tour business or scaling a national fitness brand, we partner with you like part of the team.
What we value
Long-term thinking – We build with loyalty, lifetime value, and scale in mind
Patrick Vincler is a senior marketing strategist with over 15 years of experience helping brands grow through full-funnel strategy, digital innovation, and lifecycle marketing. With a background spanning SaaS, eCommerce, and experience-driven sectors, he’s led initiatives that have driven 24% ARR growth, 30% eCommerce revenue gains, and 15% CAC reduction.
At Portside, Patrick leads marketing strategy for clients across the outdoor, fitness, adventure, and marine industries – designing systems that align acquisition, engagement, and retention to business outcomes. His work bridges CRM, content, automation, and offer strategy, helping brands connect with high-intent audiences and scale sustainably.
He’s also spearheaded digital transformation efforts in complex, high-compliance environments – launching AI-powered tools, CRM systems, and multi-channel automation to modernize customer experiences and drive measurable performance. With a sharp eye for both strategy and execution, Patrick brings systems thinking, creative agility, and results-driven focus to every engagement.
Grant Guthrie is a marketing entrepreneur and licensed 100-ton captain with 17 years building and exiting digital agencies. He launched Teracore in 2008 starting as lead designer, evolving into performance marketer while spinning up events and SaaS ventures which sold in 2018.
After driving growth for clients at MAD Group (San Diego) and Direct Connection (San Francisco), he founded Portside to blend marketing precision with the adventure lifestyle. At Portside, Grant leads strategy for marine, yacht, and outdoor brands – delivering AI-powered full-funnel campaigns, CRM automation, and conversion systems that shorten sales cycles and scale revenue.
He’s also deployed predictive analytics and automated workflows that cut admin time by 40%. With a captain’s command and founder’s execution, Grant turns maritime passion into measurable performance.