For what it’s worth, the boat I test sailed in 2015 had the main sheet go to the mizzen mast, as does my boat.  There is a risk with that arrangement that the sheet will wrap around the corner of the roof if the extension is pulled out.  I avoid that by using the bingos you can see in this picture.  The bungee pulls the main sheet forward of the corner if there is little tension on the sheet like in a light air jibe.  

Joerg Esdorn
A55 #53 Kincsem
Currently in Trinite sur Mer