Another way to do it is with good CPD. Yesterday I made the long journey to Climb Rochdale to attend a joint BMC/AMI/NICAS Workshop for climbing wall technical advisors. There was a good breadth and depth of experience there and we had seminars on: Procedures and Risk Assessment, Wall Construction, Route Setting and Site Specific Award Schemes as well as going off at various interesting tangents and over running every session.
Some of my peers seem to find such CPD honerous. I think it's very naive to believe that we can't learn from each other and besides that, which part of getting better at your job is not to like?
Here are 2 videos of my Bolivia Exped. for Adventure Peaks a month ago:
and Pt 2