[header] How to load a powerboat on a trailer [title] Practice backing the trailer. [step] Backing boat trailers is essential to the powerboat loading process. The biggest key is to go slowly, which can be difficult when many other boaters are waiting to use the ramp. 
For this reason, it makes sense to practice somewhere else. Take your trailer (with or without the boat) to an empty parking lot and practice backing until you are comfortable.