Extendable compartment trailer assembly and methods of operation thereof

An extendable assembly comprising:

• a first frame configured to support a first compartment, the first frame comprising first and second hollow support arms configured to receive first and second hitch arms of a hitch assembly;
• a second frame configured to support a second compartment, the second frame comprising one or more support arms;
• a slide assembly coupling the first frame to the second frame such that the second frame is slideable relative to the first frame between a fully retracted position and a fully extended position, wherein, in the fully retracted position, the second frame is on top of the first frame;
• and
• at least one leg coupled to the first frame or the second frame,
• wherein the slide assembly comprises a pair of first slide assemblies coupled to opposite sides of the first and second frames, and wherein the first and second hollow support arms of the first frame are between the pair of first slide assemblies.

An extendable assembly comprising:

• a first frame configured to support a first compartment;
• a second frame configured to support a second compartment;
• a third frame configured to support a third compartment;
• a first slide assembly coupling the first frame to the second frame such that the second frame is slideable relative to the first frame between a fully retracted position and a fully extended position, wherein, in the fully retracted position, the second frame is on top of the first frame;
• a second slide assembly coupling the third frame to the second frame such that the third frame is slideable relative to the second frame between a fully retracted position and a fully extended position, wherein, in the fully retracted position, the third frame is on top of the second frame;
• and
• at least one leg coupled to at least one of the first frame, the second frame, and the third frame.