Hi there has been 2 mozzies that have tried this one in VIC a mk1 mozzie that they added 1 metre to the existing mast section put square top mainsail and off they went with no breakages to my knowledge. Then they tried a mk2 in SA same mast changes first mast snapped in half second mast bent spredder snapped mast third mast after lots of talk and professinal built mast bent spedder and broke mast. I think just adding new sail mite look good but is the rest of the boat really up to it I think some has to try and see what happens if proven results show it's better the maybe it should be put to a vote but from what i have seen leaving it alone at the momement would be a good idea. PS we have 10+ regestered mozzies at our club and they are getting bigger so that says a lot for the class also greg goodall made sails for above mk1 and mk2 thanks