BACKGROUND: Scottish Surgical Boot Camps are the induction course for new start Core Surgical Trainees (Residents) in Scotland. The aim is to capitalise on trainees' receptiveness at a time of transition, and to give them a safe and "flying start." At their inception, these were the first such courses in the UK to integrate technical and non-technical skills training. As well as knowledge and skills, trainees have learned norms and expectations of a community of professional practice. METHODS: Over 9 consecutive years of delivery and quality improvement, faculty have learned much about the safe use of simulation, as an adjuvant training modality for a range of competences required in the operating room, the clinic/office, the wards and other clinical domains. CONCLUSION: In this paper we describe the development and content of the course, discuss the importance of the whole "activity system," and present some evaluation data. We give tips for success, such as using simulations of escalating complexity, and the power of seemingly incidental Learning Outcomes. (C) 2019 Association of Program Directors in Surgery. Published by Elsevier Inc. All rights reserved.