One story that I have heard is about the guy that bought a brand new high powered performance boat. When he took it out for the first few test runs he noticed that performance was way under par for what he had been lead to expect. After having a marine mechanic check the engines several times to no avail he was at a loss as to what to do next. Finally he hired a diver to inspect the hull under the waterline to see if the problem could possibly be found there. After a few minutes the diver returned to the surface and was laughing so hard he could barely breath. Apparently, the trailer was still attached to the boat!