That is possible. It may also be that when the boat was launched the rigging was at the end of the boom. Here is an image of a 2016 H31. It looks like the rig is end boom.
View attachment 211389
Maybe it's cheaper for the factory to churn out one boom, then the installation crew just sets it up for the particular model. I do like that setup. I don't see that conversion happening on my boat tho. Even if it were a free project, I can't sacrifice the headroom.
Back to topic here. Attached is a pic of the Hobie jib sheet rout. It has a seperate port and starboard jib sheet just like big boats, but it only uses one line (the control ends are effectively tied together). I'd like to do this for the main. That way there is half the length of slack line in the cockpit. It works on the hobe because port and starboard controls are completely separate. Would this be possible with both sides using the same purchase system (like the main has)? The only way I can think to do it is to figure out how to splice the line so it's just one big loop.
The idea is that it never matters which side of the boat the main is controlled from.