A Hatch ..... Interesting idea and puzzles that poses .....

Here in the sub tropics ( Lots of Rain

) We’d have to design the hatch within/under another structure to continuously deflect the rain down and away from the trailer , leaving no areas that water could get into ... thinking “scales “ all facing down ... in various degrees ...
And now , having built the Bigger trailer , we’ll continue building larger trailers ... Being 6’3” ... I just don’t fit too well in a 4X4X8 ...
Mike , I’m actually back on the Zephyr page for an idea... Just a BIG one ... It’s got all the right curves and angles to make it STRONG , , aerodynamic , and actually fairly easy to build ... in reality like building a simple flatboat upside down .... sorta’ ish’ ...

Gentle curves don’t require kerfing ... Should be not only Light for it’s size , but good towing and good in crosswinds ( Angled sides ) ... Now just have to figure where to put the Hatch ....

I guess the whole rear end could rotate up ... somehow , forming a rudimentary Patio canopy ... maybe all the strings of little decorative lights could automatically fall out as it opens ...

Instant Sports Bar ....

On a low carry on trailer you’d have that back deck anyway ...

Lots of possibilities ...
