As BCB said, you need to provide more info. A 175 certainly ought to be pushing 70. If it is really a 175 and not a tired 175 that is not even making 150. What about the prop? An old prop loses pitch, gets nicks, may have different pitch/cup on each blade, etc. Engine height could be too low. Bottom of boat could be ragged or damaged. There are a ton of things to check, so you have to start somewhere. Good start would be to take it to a truckers gas station that has a weigh scale and weigh the thing to make sure it isnt extra-heavy for some reason. Then check the motor and prop. Then the setup. Etc.I helped a guy that bought a used Stratos late last summer. A 294 with a 150. Ran like a dog. Turns out it had a 28″ predator prop, and could not pull it even to 5K rpm. So there is plenty to look at, and you should be able to improve that number if there is no major problems with the boat or motor.2008 Pantera Classic2014 Mercury Pro XS 200
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