I've bought a new 2kva inverter generator so that we can free park with a few comforts. I want to mount a generator box to the A frame. I want it to be lockable, light, waterproof and made of aluminium preferably. Has anyone out there done this? I'm thinking of maybe buying a pre-made toolbox. Is this the way to go? Also any other hints or tips about the use of generators in free parks or the mounting & storage of them on your expandas would be great.