Then You should do It Yourself!
Anyone who has ever worked in customer service has likely experienced the feeling of being completely overwhelmed by the demands and expectations of clients. This flight attendant understands your predicament if you took on board an item that is too large to be carried through the cabin.
You don’t even need a degree in physics to see it if you look hard enough! Please be considerate to the flight attendants, since they are required to handle a large number of luggage on a daily basis. The person who receives it will think highly of it.