Back bay is pretty close to Big Bend of the Colorado State Park, Nevada, and has a launch ramp. On Needles Hwy. About 3 miles south of Casino Drive, Laughlin, Nv. Hotels/Casinos in Laughlin. Pioneer is boat friendly-closer to the rooms, ect. Been to them all over the years with the boat, never had a problem.
Laughlin has the launch ramp at the Riverside Casino.
Bullhead Community Park and Davis Camp has launch ramps on the Bullhead side.
Lazy Harry's is closed for remodeling per facistbook, as of now. The launch may or may not be open.
Rotary park and Rusty's are a bit further south than Big Bend and Lazy Harry's.
Watch water flow here:
https://www.usbr.gov/lc/region/g4000/hourly/hourly.html Davis Dam releases:
https://www.usbr.gov/lc/region/g4000/hourly/DavisParkerSchedules.pdfDan'l