How far can a boat stick out of the back of a trailer in Iowa?

In Iowa, a boat can legally extend up to 3 feet beyond the back of a trailer. However, if the boat extends more than 4 feet, it must be marked with a red flag or light to ensure visibility to other drivers. It's essential to check local regulations, as specific conditions may vary by county or municipality. Always ensure that any load is secure and does not pose a hazard on the road.