Originally Posted by thatsmrmastercraft
Based on your location, you are likely to be dealing with a boat and trailer with a lot of saltwater exposure. This bring another level of inspection. Closed cooling system? Galvanized trailer? If steel trailer, inspect in great detail as it could be in need of replacement. Box-rail trailers do not typically survive well in saltwater situations.
Look for corrosion at electrical connections sites at rear of motor. Also, inspect the steam tube on the risers. Like Peter above mentions - if there's a galvanized trailer there are some other things to look at. If galvanized trailer - you will really want to inspect water passages in risers ans manifolds - not a big deal with the right tool.
Also if this is at a MC dealer you can have them connect a PC to the ECU and get a reading on how the engine hours look - i.e. where the bulk of the hours were run.
Also grab the rudder and see if there's any play in it.