Wrong. According to this study below, clomid raises testosterone considerably in healthy, young males (i.e. guys with high test levels, much like someone on a cycle with high test).
The effects of aging in normal men on bioavailable testosterone and luteinizing hormone secretion: response to clomiphene citrate.
Tenover JS, Matsumoto AM, Plymate SR, Bremner WJ.
Geriatric Research, Education, and Clinical Center, Veterans Administration Medical Center, Seattle, Washington.
Serum testosterone (T) levels in men decline with age while serum LH levels, as measured by RIA, increase. To assess if the decline in serum T levels in healthy aging men is paralleled by an age-related decline in the bioavailable non-sex hormone-binding globulin (SHBG)-bound fraction of T and to determine whether there are age-related changes in LH secretion or LH control of T production, we studied 29 young (aged 22-35 yr) and 26 elderly (aged 65-84 yr) healthy men. All men had single random blood samples drawn, and 14 men in each age group underwent frequent blood sampling for 24 h, both before and after 7 days of clomiphene citrate (CC) administration. Both mean 24-h serum total T levels and non-SHBG-bound T were reduced in elderly men compared to those in young men (P less than 0.05), while estradiol and SHBG levels were similar in the 2 age groups. Serum FSH determined by RIA and LH by RIA and bioassay were higher in the elderly men compared to those in young men (P less than 0.05), but the ratios of LH bioactivity to immunoreactivity and the LH pulse frequency and amplitude were similar. After CC administration, mean serum total T and non-SHBG-bound levels in young men increased by 100% and 304%, respectively, while in older men these values increased by only 32% and 8%, respectively. However, CC-stimulated LH pulse characteristics and serum levels of estradiol, SHBG, FSH, and bioactive and immunoreactive LH were similar in the 2 groups. Thus, both at baseline and after CC stimulation, elderly men had significantly lower serum total T and non-SHBG-bound (bioavailable) T levels than did young men, despite similar or increased levels of bioactive LH and similar bioactive to immunoreactive LH ratios and LH pulse characteristics. These results suggest that major age-related changes in the hypothalamic-pituitary-testicular axis occur at the level of the testes and are manifested by decreased responsiveness to bioactive LH. Administration of CC to young and elderly men resulted in similar changes in LH pulse characteristics and LH bioactivity and immunoreactivity, suggesting preserved hypothalamic-pituitary responsiveness in the elderly.
Sending signals to the HPTA works with clomid (though arguably HCG is better). If you don't want the sides from clomid throughout the cycle, running it concurrently with your test dosage for a period of 7-14 days mid cycle (until the balls come back) could work in theory too. I've done one 12 week cycle and ran clomid for a week mid cycle to test this theory. The balls came back, though began to atrophy by Week 12 when I started it back up again as part of my PCT protocol. Clomid works even when testosterone is present, whether endogenous or exogenous, and Dante referenced the above study in his post on this subject.
THAT ALL SAID, I don't think clomid therapy is necessary on a one-and-done 8-12 week run. I think this is important for those big guys who stay on year-round (clomid would come in handy when cruising on HRT dosages between blasts of 500-750mg). If you're someone who cycles 1-2 times a year for short runs, then I understand it to suggest sending signals MID-cycle isn't necessary. That's what I got out of it, anyway.