I am a newbie to this, so bear with me. Our swim club wants to show movies by the pool this summer - "Dive In Movies". What type of projector do you recommend - especially knowing we will probably only use it 4 times or so this summer. Can these be rented, or is the price too costly? I have been trying to do research, but I get very confused with all the technical lingo associated with the projectors. Thanks in advance for any information!