A boat trailer needs guide ons to center the boat on the trainer before you take it anywhere. Choosing not to use guide ons could result to damage to the boat or the trailer and possibly harm to yourself or those around your trailer before you start your journey. They are not extremely expensive, but, can be made pretty easily for a fraction of the cost. Who doesn't love to save money? For
. instructions, please see step by step instructions in the third post on this webpage http://www.pensacolafishingforum.com/fishingforum/Topic400020-4-1.aspx#bm400068.