I have had several boats and trailers and I usually go fishing alone. In addition some of the places I launch require a drive-on trailer to load the boat (very steep ramps). It has always been easy to load all my other boats on the trailer by simply backing my trailer down the ramp, cranking up the kicker then motoring up onto the trailer. The boat I have now has me stumped. It is is an old 16 foot bowrider . When I got the boat the trailer had rollers down the middle of the trailer that contacted the keel and two very short ( 2ft. long) two by four bunks at the back of the trailer. With this set up the only way to load the boat was to winch it on the trailer which meant wading out waist deep to help guide the boat on the trailer. If the wind was blowing or the current was moving This was a difficult thing to do! I replaced the rollers with two full length bunk boards about two feet up the side of the boat. The hull shape goes from flat at the stern to a deep V at the bow. I left two rollers on the trailer for centering the keel. One of those centering rollers at the end of the trailer and one keel roller at the next cross brace on the trailer. This is much better but I still can't consistantly center the boat on the trailer or drive it completely on. I also have two upright Guides at the back of the trailer. Can anybody help by telling me how to set up my trailer for a bow rider hull so I can drive all the way on my trailer withour going full power? I'd like to be able to center the boat each time and drive on without using a lot of power. Thanks for the help!