Some relevant excerpts from the D-I manual (I underlined to highlight key points)...
12.01.3 ?Individual? vs. ?Student-Athlete.? NCAA amateur status may be lost as a result of activities prior to enrollment in college. If NCAA rules specify that an ?individual? may or may not participate in certain activities, this term refers to a person prior to and after enrollment in a member institution. If NCAA rules specify a ?student-athlete,? the legislation applies only to that person?s activities after enrollment.
12.4 Employment.
12.4.1 Criteria Governing Compensation to Student-Athletes. Compensation may be paid to a student-athlete: (Revised: 11/22/04)
(a) Only for work actually performed; and
(b) At a rate commensurate with the going rate in that locality for similar services.
12.4.1.1 Athletics Reputation. Such compensation may not include any remuneration for value or utility that the student-athlete may have for the employer because of the publicity, reputation, fame or personal following that he or she has obtained because of athletics ability.
12.4.2 Specific Athletically Related Employment Activities.
12.4.2.1 Fee-for-Lesson Instruction. A student-athlete may receive compensation for teaching or coaching sport skills or techniques in his or her sport on a fee-for-lesson basis, provided: [R] (Revised: 1/9/96 effective 8/1/96, 4/25/02 effective 8/1/02, 4/2/03 effective 8/1/03)
(a) Institutional facilities are not used;
(b) Playing lessons shall not be permitted;
(c) The institution obtains and keeps on file documentation of the recipient of the lesson(s) and the fee for the lesson(s) provided during any time of the year;
(d) The compensation is paid by the lesson recipient (or the recipient?s family) and not another individual or entity;
(e) Instruction to each individual is comparable to the instruction that would be provided during a private lesson when the instruction involves more than one individual at a time; and
(f ) The student-athlete does not use his or her name, picture or appearance to promote or advertise the availability of fee-for-lesson sessions.
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12.4.3 Camp/Clinic Employment, General Rule. A student-athlete may be employed by his or her institution, by another institution, or by a private organization to work in a camp or clinic as a counselor, unless otherwise restricted by NCAA legislation (see Bylaw 13.12 for regulations relating to camps and clinics). Out-of-season playing and practice limitations may restrict the number of student-athletes from the same institution who may be employed in that institution?s camp (see the specific sport in Bylaw 17 for these employment restrictions and Bylaw 13.12).
12.4.4 Self-Employment. A student-athlete may establish his or her own business, provided the student-athlete?s name, photograph, appearance or athletics reputation are not used to promote the business. (Adopted: 12/12/06)
13.12.2 Employment at Camp or Clinic.
13.12.2.1 Student-Athletes. A student-athlete may be employed in any sports camp or clinic, provided compensation is provided pursuant to the criteria of Bylaw 12.4.1. A student-athlete who only lectures or demonstrates at a camp/clinic may not receive compensation for his or her appearance at the camp/clinic. (Revised: 4/24/03 effective 8/1/03, 1/19/13 effective 8/1/13)
13.12.2.1.1 Self-Employment. A student-athlete with remaining eligibility is not permitted to conduct his or her own camp or clinic. [R] (Revised: 4/24/03 effective 8/1/03)