This study aimed to understand which strength and conditioning (S&C) coaching behaviours and characteristics are perceived as effective by elite athletes and how these influence the athlete. A secondary aim was to consider the development and usefulness of vignettes to elicit new knowledge. Ten elite athletes reflected on scenarios presented in the vignettes. Resulting themes were divided into ‘the process and factors’ influencing, and ‘how’ the athletes are impacted. Themes were considered effective because of an environment of trust and respect. How coaches might influence the athlete were divided into: i) cognitive influences and ii) behavioural influences. The results are discussed in light of current sports coaching literature. Furthermore, we discuss the way the vignettes enhance the richness of the data collected. Practically, the results suggest that S&C coaches develop trust and respect to influence athlete’s development through effective instruction, communication and motivation.