I work shifts full time. I re-joined SW online on Jan 2nd this year, so far I have been quite pleased. I weigh myself when I've just got up. I have lost a stone so far. I found last time round when I went to the meetings, I could only realistically get to one in 3 and i lost the motivation to go and gave up. That said, I really miss having a consultant to get advice from (but this forum is just as good!) as the Sw online website is a bit heavy going if you have a question, they will only reply to you if your question is not already on the site.
I find nights the worst to cope with. I have a main meal before I go in, and then take fruit, cottage cheese and some low syn snacks with me.