bunk movement across trailer

The surface you are parked on, the pressure in your tires will all effect the motion you feel. I am not surprised she could feel you move around. There are things you can do to minimize but there will always be some since you sit on tires and a suspension system.

I can feel the grandbaby (3 years) when she gets up in the middle of the night.

I have an older Palomino with a full bed on one end and a queen on the other.

Even with an 8' by 13' box, when someone moves on one end, the bed leverage is so large you can feel it at the other.

It is rare that we are parked on a solid surface like concrete. Usually it is gravel, grass or dirt; so I cannot really say if the surface makes any difference.

I can't be sure it would work in all cases, but I have wood scraps that go under the stabilizers. I have some 3/4" plywood pieces cut into 6 inch squares plus some 2/x's cut into 6 inch lengths. Never have to worry about the surface I'm on with those.

We've camped on relatively soft dirt as well as a paved pad and I didn't notice much difference in the felt movement. If one of the kids at the other end rolls over, I can feel it some.

With the BAL light trailer leveler under one wheel and a decent amount of pressure from the stabilizers, our high wall is pretty stable most of the time. It does seem to vary and most of the time (I have not kept records) it is the unpaved surfaces that make it so.

I made some stabilizer platforms that keep them from having to be cranked so far down after doing an over/under axle conversion that added ~5" of height to the frame. I made them 8" so the stabilizers have to come down not so far. I don't know that this helps so much but I didn't have them with our first PUP and remember it bouncing quite a bit, even with a good bit of pressure on the stabilizers. Your frame can play a huge part in it as well.

I would try just a bit more pressure on the stabilizers and highly recommend the BAL leveler, not just for ease of use but for helping to knock down any wheel movement.

Platforms:


BAL leveler:


It is my opinion that trying to stabilize the bunk ends directly will not yield you much. If what they are attached to is still wiggling, you're really not going to do much for the bunk ends when they are anchored to the box still bouncing.