A method of embedding an elongate susceptor within a thermoplastic body, the method comprising: extending the elongate susceptor from a guide structure of an application tool and to a body-contacting structure of the application tool such that an extended portion of the elongate susceptor extends between the guide structure and the body-contacting structure; heating, with a heating structure of the application tool, a segment of the elongate susceptor to a segment temperature that is greater than a melt temperature of the thermoplastic body, to produce a heated portion of the elongate susceptor; pressing, with the body-contacting structure, a leading region of the heated portion of the elongate susceptor through a body surface of the thermoplastic body and into the thermoplastic body; and concurrently with the pressing and the extending, operatively translating at least one of the body-contacting structure and the application tool along an embedment pathway for the elongate susceptor, wherein the embedment pathway is defined along the body surface, and further wherein the operatively translating includes smoothing the body surface with the body-contacting structure, wherein the body-contacting structure includes a trailing body-contacting structure and a leading body-contacting structure that is spaced-apart from the trailing body-contacting structure, wherein the pressing includes pressing with the leading body-contacting structure, and further wherein the smoothing includes smoothing with the trailing body-contacting structure, and wherein the pressing includes displacing a displaced volume of thermoplastic material, which defines the thermoplastic body, such that the displaced volume of thermoplastic material extends from the body surface of the thermoplastic body, and further wherein the smoothing includes at least one of: (i) at least partially flattening the displaced volume of thermoplastic material; (ii) at least partially planarizing the body surface of the thermoplastic body; and (iii) pressing the displaced volume of thermoplastic material toward the body surface of the thermoplastic body. extending the elongate susceptor from a guide structure of an application tool and to a body-contacting structure of the application tool such that an extended portion of the elongate susceptor extends between the guide structure and the body-contacting structure; heating, with a heating structure of the application tool, a segment of the elongate susceptor to a segment temperature that is greater than a melt temperature of the thermoplastic body, to produce a heated portion of the elongate susceptor; pressing, with the body-contacting structure, a leading region of the heated portion of the elongate susceptor through a body surface of the thermoplastic body and into the thermoplastic body; and concurrently with the pressing and the extending, operatively translating at least one of the body-contacting structure and the application tool along an embedment pathway for the elongate susceptor, wherein the embedment pathway is defined along the body surface, and further wherein the operatively translating includes smoothing the body surface with the body-contacting structure, wherein the body-contacting structure includes a trailing body-contacting structure and a leading body-contacting structure that is spaced-apart from the trailing body-contacting structure, wherein the pressing includes pressing with the leading body-contacting structure, and further wherein the smoothing includes smoothing with the trailing body-contacting structure, and wherein the pressing includes displacing a displaced volume of thermoplastic material, which defines the thermoplastic body, such that the displaced volume of thermoplastic material extends from the body surface of the thermoplastic body, and further wherein the smoothing includes at least one of: (i) at least partially flattening the displaced volume of thermoplastic material; (ii) at least partially planarizing the body surface of the thermoplastic body; and (iii) pressing the displaced volume of thermoplastic material toward the body surface of the thermoplastic body. (i) at least partially flattening the displaced volume of thermoplastic material; (ii) at least partially planarizing the body surface of the thermoplastic body; and (iii) pressing the displaced volume of thermoplastic material toward the body surface of the thermoplastic body.