This boat trailer guide set fits ski boats, sailboats, and fishing boats, helping position the hull during loading and transport. Each 65.7 in guide post uses a high-hardness steel frame paired with a round Pvc tube guide-on that cushions the hull and reduces scratches and scuffs on bumpy roads. The guide width adjusts up to 11.8 in on each side, creating a wide, flexible fit for boats of different beams so the hull settles into the ideal position for smooth loading. Mounting beams up to 3 in wide and 4.25 in tall are supported, with two flexible mounting options and heavy-duty bolt fastening that resist loosening from vibration and impact. A solar-powered Led light tops each post, running on a 1000 mAh Aa battery that delivers 4 to 6 hours of steady light after a full day of charging, keeping the guide visible at night. Each single-side installation measures 21.7 x 3.5 x 65.7 in and the complete set weighs 18.5 lbs.