After conducting research, it appears that there is no boat ramp named South Point in Oregon at the given coordinates of latitude 45.85380173 and longitude -119.1472168. Therefore, it is impossible to determine what kind of boat ramp it is, how wide it is, what body of water it services, and what kind of craft are permitted on the water.

It is important to ensure that accurate information is used when discussing locations and facilities to avoid misinformation and confusion.