After conducting research, I was unable to find definitive information about a boat ramp named Smith Lake in Minnesota with the given latitude and longitude coordinates. It is possible that the coordinates are incorrect or that the ramp is not a well-known location.

Without accurate information to go on, I cannot provide details about the type or width of the boat ramp, the body of water it services, or the types of watercraft that are permitted there. It is important to verify information through reliable sources before sharing details about a location or facility.