Looking for a used motor for my 14' Starcraft. This is the very basic 3 bench seat boat and is very light. I will be mainly using this boat for duck hunting and very little fishing as I have a different boat for that. I'm looking for opinions on 2 motors in particular. 1976 Mercury 7.5HP and a 1984 Force 9.9HP. Both run well and appear to be in nice shape for their ages. Both motors are only a couple hundred dollars. I welcome opinions to which motor and why. Thanks in advance!