If you are trying to fit your FED and a golf cart in your trailer, one thing I have seen is to load the dragster in backwards [ rear of the car toward the front of the trailer,] then scoot the front of the dragster over to one side of the trailer, there-by giving you room to store the cart.
Another trick I've seen is to build a ramp for the cart, after you take the winshield of to make it lower, store the dragster under the cart ramp. It makes the trailer crowded but it will work with a short trailer, untill you take the cart ramp out of the trailer at the races.
The most creative race car trailer combo I've seen is the stacker tool box loaded in the very front of the trailer, the backwards FED but the front end is lifted up to the roof [ winch] so his Vega SuperGas car fits under the front of the dragster, and then the golf cart behind the Vega, all in a dual axle 28' [ ?] trailer , crazy Heh ? No I didn't take any photos.
Cheers, Jon