Re: what is the point of a tilt trailer
I think they allow you to be able to push the boat off in shallower water, allowing the back of the boat to float once tilted.
You can theoretically back up to a deep bank, without a ramp, tilt the trailer, and push the boat off, depending on how big the boat is, the water body, bank, etc. It's fairly common for smaller aluminum boats to be used this way. I've got a 16ft Sea Nymph, that I recently pulled off the trailer, to repair it. I just released the pivot, tied the boat to a telephone pole, and gently pulled the trailer out from under the boat. The tilt action lets the boat slide onto the ground real easy.