Our modified upper bunk, complete with tent!
We removed the stock upper bunk, including the metal bars that ran across the rear of the bunk - this left 2 unsightly brackets that we covered with cedar 2x2’s. We then cut a piece of 3/4 inch birch plywood to fit, carpeted the top with short pile nylon carpet, then finished the edge with aluminum angle. This provides a great place for Flea to hang out whenever the top is up.