Seniors' reverse mortgage experiences mostly positive

Survey: More than 50% would recommend loan to family, friends

John Marttila has seen his share of slam-dunk winners and woeful losers.

The leader of Boston-based Marttila Strategies, a public-opinion research firm, has worked for a wide variety of elected officials in all regions of the United States, including Vice President Joe Biden, former presidential candidate John Kerry, Massachusetts Gov. Deval Patrick, and other members of the U.S. House and Senate.