Hi, there is a group on Telegram called 'Common law- motoring issues'. It has resources and a lot of useful information from other members in similar position. I cannot see how i can post a link here, but its easy to find it once you access telegram. Hope it helps.
for the link, maybe you could copy and past it into your comment?
what is your country/region? A rep in Unify the People NL (canada) has experience with this ... Shane Sweeney - you can find him on facebook here: https://www.facebook.com/shane.sweeney.39 -- He has personal and successful experience with doing this in his province of NL, Canada