We have a Sunseeker 2300. I am in charge of making the bed. While it is not as easy as a walkaround bed, it is not that bad. Start with the fitted bottom sheet. "Crawl" up to the head of the bed and attach the sheet on each side. Back up and bring the sheet with you until you are off the end of the bed and attach the bottom corners. Take the flat top sheet and crawl up to the head again. Spread it across from side to side, even with the head of the bed. Again back up, bringing the sheet with you to the foot of the bed and tuck in. If using a blanket, do the same. If covering with fitted bedspread that came with it, start at foot and place arouind each end. Throw the spread toward the head. Climb on the bed and smooth it forward and side-to-side until you reach head.
It's not really that hard. I'm in my early 60s with "bad" knees, but crawling on the bed is not a problem.