Long throw looks like the only option, our hall is a really weird shape! For the first 12 metres, the roof slopes steeply from left to right (two stories worth). After that, there's a large overhang, which is parallel with the front wall. Then, it opens out into the dining room! We were thinking of having the projector arm mounted on the overhang, firing onto the front wall. For fun, the entire right hand wall is made up of south facing windows!