Liquid Rollers and 2 winches!
I can definitely recommend "Liquid Rollers", which is mentioned earlier in this thread. I had a terrible time trying to get my bow into the stop, and in fact most times it was a couple of inches away from the stop as I just couldn't winch it up any further and with the ABS on my Jeep, the MacGregor "bump" was basically impossible. The last time out I sprayed the bunks with "Liquid Rollers" and when getting the boat back on the trailer, I was able to haul it up to within about 3 inches of the stop, by just pulling on a rope attached to the bow cleat. I have also mounted a second winch on top of the ladder on the front of the trailer, and when back at the staging area, using the two winches, one pulling up and one pulling down, I was easily able to pull the boat up those last few inches and get the bow to fit snugly into the bow stop. The second winch I have is a 12 volt electric winch, but I am sure it would work just as easily with a manual one. The electric winch uses a cable and the original winch has a strap, and they both work equally well, but in the back of my mind I am always thinking about the cable snapping, so I stand well clear of it when it is under tension.