Mike, the admiral & I used to overnight in our 22' Stingray deckboat. It had a "U" shaped seating area in the back and came with filler cushions. It perfectly fit a full size air mattress. We had a custom camper canvas made with "smileys" ("U" shaped cutouts in the isinglass with screens) and velcro privacy shades for the isinglass as well. The headroom under the bimini - which formed the roof of the camper canvas - was about 6'5".
I would think that using the bow area might be cramped.
Storing the canvas was no issue - we just rolled it up and it all fit under one of the bow cushions. I could put it up in 10 minutes or less.
The head was ridiculously small for me (5'11"), but OK for the admiral (and we know that's what mattered)!

I'd imagine the larger Rinkers would be OK for you, but you should check it out.
For a one-nighter it was great. We did it often. Let me know if you have any questions.