Looking at getting a new tiller steer jon with 75hp rating. I've always believed in maxing out the HP on a boat, but the 70 comes in at 100lbs lighter than the 75. Would there be a noticeable difference between the 2 with the 1 being so much lighter? The other factor I've considered is flashing. I may or may not ever do it, but the nice thing with the 75 is I could flash it to a higher HP whereas the 70 I don't believe I can.