Murrels Inlet is full of old style southern charm and compared to the chaos of Myrtle Beach is a wonderful place. It is however not cheap. As noted above, the inlet is used by sport fishers and charter boat fishers, rarely by sail boats. you can throw a rock from one jetty to the other side and depths vary greatly with the tide. If you are interested in parking a boat in the area, consider the various marinas on the Waccamaw River downstream from Socastee; they are all within the area bounded by Georgetown and Myrtle Beach, and have much better shelter from coastal storms.
Steve