Single Tough Locking Seat Fittings and Methods

A method for securing a payload to a channel, comprising:

• coupling the payload to a body of a locking assembly;
• engaging an insertion portion of the body into the channel;
• translating the insertion portion of the body within the channel from a first position to a second position, the body being substantially constrained from movement away from the channel in the second position;
• and
• actuating at least one engagement member from an unsecured position to a secured position, in which actuating the at least one engagement member from an unsecured position to a secured position includes actuating an actuation member rotatably coupled to the body in which the at least one engagement member is coupled to the actuation member and actuating a plate member engaged with the actuation member in a cam interaction, the plate member being spaced apart from the portion of the channel in the unsecured position, the plate member being clampably engaged with the portion of the channel in the secured position, and a portion of the channel being engaged by the at least one engagement member and the insertion portion of the body when the at least one engagement member is positioned in the secured position such that the body is substantially constrained from movement along the channel by the at least one engagement member.