Dan J brings up a very important point regarding trailers not being adjusted for the boats that are on them. I have ensured that every boat I have is fully supported by the bunks, and that the rear end does not hang over the bunks at all. I have seen so many boats, of all different price points, mis-adjusted on the trailer.
My rigs all sit on the bunks with about 3 inches of bunk still extending past the hull - fully supporting it.
Next time you park your tow vehicle and start walking back to the ramp to go boating, take a quick glance at the boat trailer bunks on other trailers towards the rear. Most of the time, a properly set up trailer will have marks in the back where you can see where the hull ends on the bunks. Some have no marks... Uh-oh.... :lol:
All the best,
Glenn