if you go to Directories/Sailing Services, in the Members' Area, you will see a link to members who have volunteered to offer people junk rig experience. Like many features that aren't on the home page, this is a much neglected feature; that being so, I'm not sure how up-to-date it is, but it might be worth a try.
A lot of members rarely use the website, because it's not at all user-friendly if you generally browse with a mobile phone, so it's worth contacting them directly, as they may well not see this post.