Choosing the field of education, Gil taught math and coached at SLOHS for three years, then joined the faculty at Cuesta College in 1967. This began a fifty-one year career at Cuesta serving in many capacities including: math teacher, football coach, dean of sciences and mathematics, vice-president of student services, and superintendent/president. During that time he completed his doctoral studies in educational administration at Brigham Young University.
He retired in June of 2018 after nine years as president and was named President Emeritus by the Cuesta College Board of Trustees. Active in the community, Gil has served on many local boards of directors including Friends of Prado, Sierra Vista Regional Medical Center, SLO Chamber of Commerce, Casa Solana, Community Counseling Center, and the Rotary Club of SLO. Over the last forty years, Gil has raised over $3 million for local non-profit organizations serving as a volunteer auctioneer.
Gil and his wife, Janice, have been married since 1964 and have five adult children and ten grandchildren.