“We are, we hope, a mentor, a friend and connection for association professionals and volunteers.”

Peggy Hoffman

President & Executive Director

Peggy Hoffman, FASAE, CAE, has provided training and consultation on leadership development, component relations and strategic planning to more than a dozen national associations and many local groups over the past 30 years.

From her earlier role as membership director for a trade association with components, Peggy developed a commitment to building strong communities within associations. To that end, she has been very involved in ASAE – The Center for Association Leadership and is past chair for both the Component Relations Section Council and the Executive Management Council.

A key project of the council is the “Rebuilding the Volunteer Spirit”, one of ASAE’s inaugural Innovation Projects. The intent is to explore how associations can adapt to and build on the changing volunteer and develop tools and strategies that can be a catalyst for rethinking our governance and member engagement models.

About Peggy


Content Writer

She also served on the Decision To Volunteer taskforce, development teams for ASAE University’s On-Line “Principals of Component Relations” and “Advanced Component Relations” courses, and the inaugural ASAE Foundation Development Committee. She has written for ASAE publications, including a chapter in ASAE’s Components Handbook, and been a frequent content leader.

Thought Leader

Peggy loves to write and share, so you’ll find her contributing to a variety of organizations and media including Association Universe. She has presented workshops or keynotes for more than 40 volunteer leadership conferences, retreats, and webinars ranging in size from 30 to 300 participants. With Peter, she has developed and taught several volunteer management courses for the Nonprofit Leadership Development Program at Anne Arundel Community College.


In addition to a BA in Communications from The American University, Peggy is a graduate of the association management curriculum of the Institute for Organization Management at Notre Dame and has worked in the nonprofit arena for more than 30 years. She has held positions in membership, marketing and communications for several different profession and trade associations prior to starting Mariner.

Peter Houstle

Chief Executive Officer & Chief Operating Officer

Peter Houstle is CEO/COO and the in-house expert on meetings, data & financial management, and strategic planning.

Helping associations navigate the intricacies of effective financial planning and program development comes naturally to Peter after 40 years in association management and 10 years working behind the scenes — and on stage — in the entertainment industry. He served as executive vice president for an international trade association and industry foundation, in addition to assisting dozens of other associations.

Whether it’s a 10,000+ attendee/1,000+ booth trade show in Chicago’s McCormick Place, launching a career marketing program, digging into data, building a solid membership base or putting in place secure financial management systems, he handles the details without losing sight of the big picture.

About Peter

Speaker & Writer

Peter has been a speaker and writer for ASAE – The Center for Association Leadership and multiple consulting and management clients.

Along with his partner, Peggy M. Hoffman, he developed the Dashboard Indicators for Chapter Success which is highlighted in ASAE’s Components Relations Handbook. He also worked with Peggy to develop and publish the Chapter Dashboard Tool, ROI Matrix and biennial Chapter Performance and Benchmarking Reports.

In addition, they conducted and published ASAE’s 2017 Mutually Beneficial Volunteer Systems research and the follow-up 2021 Holistic Volunteer Management Systems research and have subsequently developed and taught numerous volunteer management courses for ASAE and other associations.

Their work on numerous projects in volunteer, leadership and organizational development with their consulting clients has been featured in ASAE publications and conferences.


Peter earned his MBA from University of Maryland’s Robert Smith School of Business and a B.A. in Music from Ithaca College. And when he’s not helping associations achieve goals, he’s likely hiking in the woods, running himself ragged on the squash court or relaxing at the piano.

Carol Blattau

Manager of Administrative Services

Carol Blattau who serves as manager of administrative services. Carol brings more than eleven years experience running two different businesses to Mariner.

She’s also a consummate volunteer making her a knowledge matter expert in volunteer recruitment, training and rewarding. Carol graduated from the University of Baltimore with a BA in English/Professional Writing (and yes we believe she will write the next great American novel). In addition to her office duties, Carol is a contributor to the Mariner Idea Center blog.

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Mariner Management & Marketing is your partner in helping association volunteers and staff create the greatest possible value for your members and in ensuring the long term health and growth of your association.

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