Pete, the only problem with the cleat on the mast is that you will have to come forward to the mast to cleat it. That is a long way from the tiller. Also it is not the best pace to be in strong winds. Basically you will have the spin all the way up, no tiller and you will be at the front of the bus. The cleat on the beam allows you to hoist from the rear corner which is where you will probably be after A mark/offset.