If it was a pond boat just for one to two people, I would say one of those little Pelican plastic boats is a darn hard to beat little boat. But for 3 people, that takes it up a notch. Way up.
Yep, launching mine in a pond isn't really an option. Just probing. Lol. I got a brand new boat on order and wife won't let me keep two. (Nuts)
Mini pontoon just might be a deal to look at. Just limits you to small waters.