Hemenway paved launch ramp, next to Las Vegas Boat Harbor

Hemenway launch ramp is a paved ramp and very close to the Alan Bible visitors center just outside Boulder City.   When you arrive there's a sign that says PWC launching, left.  But don't go there unless you have a 4WD vehicle and don't mind getting your vehicle wet.  The angle of the gravel launch area is very flat, not a good idea.  It's OK to launch PWC on this nice cement ramp, although the sign implies differently.

Boulder City offer motels close by, but gambling is illegal there if that's important to you.   Henderson is the closest town to Lake Mead with Gambling casinos.

Echo Bay Launch Ramp

Echo Bay Marina is a remote location, the farthest away of the western side marinas.  The beauty of this location is less people.  It can be worth driving the extra 24 miles past Callville Bay Marina to the NE if you like peace and quite.

Kingman Wash dirt launch ramp

King Wash is a dirt and gravel launch ramp that is popular to light boaters and PWC.   It's located about 3 miles from Hoover Dam (by water) on the Arizona side.  For visitors from Arizona this is a convenient ramp if you don't mind the dirt parking lot.  As you can see there are NO amenities other than a porta-potty, so bring everything.