[step up here]

never worked on the idea yet but i thought of Velcro a laser on the front of the bow ; then putting a suitable target on the winch post . target may have to be somewhat large and offer some shade or just load up when the sun goes down.if
perfected it will offer one to load any boat on the trailer without getting from all who never owned a boatdont get me wrong its done everyday without trouble but its just a thought when you get to a neglected ramp