[catabiadj]

I'm currently looking to buy a boat. I found a 1972 20' Seacraft Seafari. The boat has a 115HP 2004 Mercury 4-stroke. I am concerned that the boat is underpowered. I really want to use the boat for fishing and spending time with my wife and two daughters(4&7). How should I expect this boat to perform? Any advice would be greatly appreciated.

Thanks,
Derek