The Thomson team is the most vocal proponent of an enhanced system.

Stone is a vocal proponent of music education for children.

By 1933, Day was an early, vocal and substantial proponent of long-term mortgages.

He is a public speaker and a vocal proponent of learning from professional mentors.

Recently, Till has been a vocal proponent of open access to scientific publications.

They are also vocal proponents of school choice, charter schools and immigration reform.

Still, they are the most vocal proponents of cruising, moved by conviction and nostalgia.

Reagan himself was a vocal proponent of the policy.

He was a vocal proponent of obtaining education and training.

He has been the most vocal proponent of this theory.