I have thought about that one for a while now and the only thing that I can think of is for the Batfish crew to construct a platform for these weapons to go on and have a dolly underneeth the weapon so that you can move it right and left, it may be a good idea for you to put in adjusters either on the platform or on the dolly so that you can raise the weapon up and down as required. To keep the weapons from falling off of your forklift is pretty straight forward, use rachet straps to hold it to the lift either on the dolly or off of the dolly.