Check for fluid leaks.
In boats equipped with a ballast system, drain water from the ballast system before placing the boat on the trailer. If the boat has ballast-pumping assistance to remove water from the ballast system, note that the engine must be running at least 1500 RPM during the pumping process (for both fill and empty operations). This will necessitate draining water prior to ceasing operation of the boat and loading on the trailer. More information regarding ballast systems appears in various sections of this Owner's Manual, but pay particular attention to the information under Boat Operations.
Check the fins (where equipped), propeller, rudder and shaft for damage after removing the boat from the water.