I just bought a 2015 Tundra (5.7). It's overkill for one boat with gear, but nice if you are towing a trailer with multiple boats on it. I think a v6 truck is plenty for 1 boat and gear and people. I'd even consider using a Subaru for that load.
As mentioned above the Tundra is the clear loser on MPG when compared to other trucks. I seriously shopped Chevy, Ford (EcoBoost) and Dodge (EcoDiesel), but I'm a Toyota guy at heart. Have had great experiences with all of my Toyota's: 2008 Tundra (5.7), 2004 Tundra, 2002 Tundra, 1997 4Runner, 1992 4Runner, 1998 Tacoma and 1993 pickup.