In addition to turning the bunks around, I would make a couple other adjustments. The winch post looks too low, the winch strap should be parallel with the trailer as it leads to the bow eye, since you are maxed out on the height, I would lower the bunks as much as you can while keeping the hull off of the trailer, this will require you to add a couple more keel rollers so the boat doesn't hit the trailer as you load it. I would move the forward most roller down so the bow can come right up to the winch post, if this makes the trailer tongue too heavy, just move stuff around in the boat to compensate. For your stern tie down, I would run a single strap up from the back of the trailer, up to the gunnel, across the boat to the other side and back down to the trailer, this would do a much better job of holding the boat down to the trailer, just be cautious not to over tighten the strap or it will start to collapse the sides of the hull together. Others have mentioned in this thread and in others that bunks extending past the supports do not provide any support, I don't believe that is the case in your situation because your bunks are mounted on edge rather than flat.