The trouble with blonde’s boat

During late spring one year, a blonde was trying out her new boat. She was unable to have her boat perform, travel through water, or do any maneuvers whatsoever no matter how hard she tried.
After trying for over three days to make it work properly, she decided to seek help. She putted the boat over to the local marina in hopes that someone there could identify her problem.
Workers determined that everything from the engine to the outdrive was working perfectly on the topside of the boat. So, a puzzled marina employee jumped into the water to check underneath the boat for problems. Because he was laughing so hard, he came up choking on water and gasping for air. Under the boat, still strapped in place securely, was the trailer.