I have a 60 Merc for a 16 ft Lund. All is well when it is wife and myself. When I have 3 adults there is "some" struggle to plane but not bad. However, with 4 adults it takes quite a bit to get up out of the hole and level off. Of course a bigger engine can solve this but is there anything I can do to help out the 60? Maybe go to 4 blade prop? One of those plates? This is only an issue when the family is together and everyone wants a boat ride. We do a little pulling of a float but then I need the smallest adult to go with me to get on plane. Probably should of gotten a 75 or 90. Thanks for any input.