Looking for some technical drawings to build a bike trailer (single and dual). Had the misfortune of parking my bike a few months into the side of a 4 wheeler after the diver decided to U turn without giving a (edit). Misery was compounded by seeing my Softail slid onto a flat bed truck and carted off! We ride in Asia and not much big bike dealers to support local activity.Want to get a trailer built "just in-case" a similar scenario occurs or find ourselves in a breakdown situation. Importation considered but problematic! All responses much appreciated.