Just returned from nearly 10 weeks in FL with my 2014 Shamrock 183. I have camped solo a few times. First time for the DW and we worked through these bed folding problems. We moved 7 times, so got lots of working practice dealing with the beds.
Has anyone had good luck with removing the ridge support and allowing the cross support to pivot down and rest on top of the mattress before pushing the panel up and latching?
First off I will say that I bought foam 1 1/2 inch thick toppers for both the front, side and back mattresses. We use the front and back all of the time but sometimes the side gets used for another family member or guest instead of just clothes storage.
We have found that you can let down the bunk hoop (cross support) on top of the mattress and topper. Pull the mattress toward you, (you may have to pick up on it slightly to clear the edging where the bunk hinges) then fold the hoop and hook onto the (single thickness) mattress then fold the mattress over on top of the metal. If working together someone on the outside then pushes the door closed. This method works well ONLY for the back and side bunk. I can also do this myself with no help, but sometimes it takes a couple of trips in and out to get everything lined up. If I encounter any resistance closing the bunk, then I have to go inside and investigate and usually find I have to pull the folded mattress toward the inside of the trailer a little more. We have folded in the mattress pad, sheets and blanket all at once when we are going to just fold them down again the same day after moving.
On the front bunk, there seems to be less room, so I have to pull off the foam topper, (I roll it up and bungee the roll and put it on the folded down dinette table) then without the topper we let down the hoop, pull the mattress toward the inside, fold in the hook, then shut the bunk up. No need to ever put the hoop under the mattress.
They sell topper zippered cases. We bought one when we got home, and I plan to slip in the topper inside the 2" high queen sized zipper case. This should make it easier to deal with the foam that I have to pull off the front bunk.
The 5' 2" DW also found it easier on her knees to use a small foot stool to crawl in and out of the rear bunk. DW prefers to bunk by herself as she reads late into the night and does not care to hear me snore.
You will work these little things out when you get on the road, or do some practice while in the driveway.