While you haven't asked I will chime in that if you have a motor mounted on your boat which otherwise would not require registration and are on "Federal waters" you do need that registration - whether the motor is being used or not. Put another way, you cannot tilt the motor and row while on Federal waters thinking you are avoiding legal troubles - at least according to Island Co. Sheriff's marine patrol.
_________________________
Remember to immediately record your catch or you may become the catch!

It's the person who has done nothing who is sure nothing can be done. (Ewing)