I had to chew on another slice of humble pie not knowing that this was indeed a crotch strap and then making a goose of myself with my comment of the size of it.........anyhow.
I have fitted and dived it and found it to be a lot better than the old system and like it. I opened the slot in my alloy backplate to accommodate the wider strap but changed the backplate to a Golem Lightweight SS (Thanks Jakub) after the alloy one started corroding and making a mess, and the new one already has the 2" slot and it threaded straight in without a problem.
I have taken your advise Ken and looped the strap into a handle, it works well. Thanks
Regards,
Lance