I had the original metal bars to keep the top bunk up. Ended up foregoing the hinges and drilling the top bunk in the the shelf to make sturdy. As long as we are camping with the little ones, we won’t be using a dinette set or bench.
I ised pvc and 2x4 to create bunk rails. I ended up putting two 2x4 on the top. And plan to paint
when I get a chance.
I like the pvc, easy to use and I can take off the top railing easily if needed. It was cheap and easy to manipulate. Hope this is useful for others!