How are you tieing down your car in your enclosed trailer

I have an early A Body, 66 Dart and I just bought an enclosed trailer. Was wondering what type of tie down methods you are using and how are you attaching them to the car.
Also what are some things I should do for using this trailer to haul the car when I need too.
Pics would be great.
It is a 24 ft x 8.5 ft.
Thanks
Rod